001-http-总览、文件配置、常用http client、http连接池
一、概述
http请求项目搭建：地址https://github.com/bjlhx15/common.git 中的spring-framework-core 的 spring-http-XX相关
主要针对post请求中的，form表单【application/x-www-form-urlcoded】提交，json【application/json】提交，文件【multipart/form-data】提交
1.1、客户端上传文件提交配置
pom
<!-- 文件提交-->
<!-- commons-fileupload 包含 commons-io -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
spring bean xml配置【有时还需要修改tomcat nginx等配置文件】
<!-- 定义文件上传解析器 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 设定默认编码 -->
<property name="defaultEncoding" value="UTF-8" />
<!-- 设定文件上传的最大值5MB，5*1024*1024 -->
<property name="maxUploadSize" value="5242880" />
<property name="maxInMemorySize" value="4096" />
</bean>
代码开发
@RequestMapping("/upload")
@ResponseBody
public Object upload(@RequestParam("file") MultipartFile file) throws Exception {
Map<String, Object> map = new HashMap<>();
map.put("code", "2000");
map.put("size", file.getBytes().length);
return map;
}
服务端接收文件的处理方式如下：推荐使用transferTo 速度比较快
/**
* 1、获取 流 方式处理
*
* @param file
* @return
* @throws Exception
*/
@RequestMapping("/uploadHandler1")
@ResponseBody
public Object uploadHandler1(@RequestParam("file") MultipartFile file) throws Exception {
Map<String, Object> map = new HashMap<>();
map.put("code", "2000");
map.put("size", file.getBytes().length);
//获取输入流 CommonsMultipartFile 中可以直接得到文件的流
InputStream is = file.getInputStream();
return map;
} /**
* 2、使用file.Transto 来保存上传的文件
*
* @param file
* @return
* @throws Exception
*/
@RequestMapping("/uploadHandler2")
@ResponseBody
public Object uploadHandler2(@RequestParam("file") MultipartFile file) throws Exception {
Map<String, Object> map = new HashMap<>();
map.put("code", "2000");
map.put("size", file.getBytes().length);
File newFile = new File("path");
//通过CommonsMultipartFile的方法直接写文件（注意这个时候）
file.transferTo(newFile);
return map;
} /**
* 3、使用HttpServletRequest 自己写
*
* @param file
* @return
* @throws Exception
*/
@RequestMapping("/uploadHandler3")
@ResponseBody
public Object uploadHandler3(HttpServletRequest request) throws Exception {
Map<String, Object> map = new HashMap<>();
map.put("code", "2000"); //将当前上下文初始化给 CommonsMutipartResolver （多部分解析器）
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());
//检查form中是否有enctype="multipart/form-data"
if (multipartResolver.isMultipart(request)) {
//将request变成多部分request
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
//获取multiRequest 中所有的文件名
Iterator iter = multiRequest.getFileNames(); while (iter.hasNext()) {
//一次遍历所有文件
MultipartFile file = multiRequest.getFile(iter.next().toString());
if (file != null) {
String path = "E:/springUpload" + file.getOriginalFilename();
//上传
file.transferTo(new File(path));
}
}
}
return map;
}
1.2、postman请求测试【可以导入以下json测试】
{
"id": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"name": "http",
"description": "",
"order": [],
"folders": [
{
"name": "form",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"order": [
"978d45f7-4673-4196-cacb-553699863f1d",
"00d68b33-974d-78d2-27f0-09889b5a5a3c",
"7060e912-d5d0-1731-9385-ce25fd0e88ff",
"790f2d92-7482-de03-3fc1-56ae53635471",
"bb8e21af-5acf-9f05-9c34-5f0425055e97",
"f905ac7b-953a-88c7-00b2-d8b936be4207"
],
"owner": 0,
"folders_order": [],
"id": "74f0c28e-dbc8-969d-f173-6864fb2acfa8"
},
{
"name": "json",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"order": [
"9f923f96-17e7-7a56-f044-f5962e47d046",
"a3bd7e77-ada4-4842-e5e9-d9869b30d0ab",
"c804a86e-a365-8b2a-6ceb-c548fc1d2f15",
"308d4f4b-493e-ed41-5aec-97b4789fb12c",
"317dfa64-1b31-e0b9-b9b0-50e7430455ee",
"fb811f2b-03b1-23b3-3077-5c56edf8a030",
"063968d2-c7af-59d4-c906-e0c38baf1184",
"86bbfbce-1fb2-2c85-4036-f1d6605046af"
],
"owner": 0,
"folders_order": [],
"id": "1759fa83-80ac-112b-d732-ef84cef8b692"
},
{
"name": "multipart",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"order": [
"e86731bb-9efb-0cb9-7df7-19cafbe581cd",
"fc04a41c-6123-d2ce-81f1-96ec54989acc",
"26cd6e2d-d115-d62b-6051-8db5b52e9299",
"cecfce52-448e-1016-946d-b6e4e50561d2",
"24b708d1-4f64-1700-2c84-c743bf689fc5",
"e90f5a7b-e924-131e-0b2a-0dd6a467c222",
"8654a7de-9249-0f63-4b78-243e2524f6a6",
"687c99c6-75b5-6c17-b93a-da10735a14dc",
"8dbe5329-7512-528d-61b2-df1f376ba48e",
"c317bed2-1ab8-4ac0-1570-72de93f140cd"
],
"owner": 0,
"folders_order": [],
"id": "70d362df-168c-a821-3b29-cac943e77301"
}
],
"folders_order": [
"74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"1759fa83-80ac-112b-d732-ef84cef8b692",
"70d362df-168c-a821-3b29-cac943e77301"
],
"timestamp": 1564578515435,
"owner": 0,
"public": false,
"requests": [
{
"id": "00d68b33-974d-78d2-27f0-09889b5a5a3c",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/form/params?id=1",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [
{
"key": "id",
"value": "1",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "id",
"value": "id",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "msg",
"value": "msg好的",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582887199,
"name": "/form/params-url-body ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "063968d2-c7af-59d4-c906-e0c38baf1184",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/paramsobject1?name=name&age=344",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "name",
"value": "name",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "344",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583900424,
"name": "/paramsobject1-url no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{}"
},
{
"id": "24b708d1-4f64-1700-2c84-c743bf689fc5",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/paramsobject?name=name&age=34",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [
{
"key": "name",
"value": "name",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "34",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584125617,
"name": "/paramsobject-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "26cd6e2d-d115-d62b-6051-8db5b52e9299",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/params1?id=1&msg=2",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "id",
"value": "1",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "msg",
"value": "2",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584050000,
"name": "/params1-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "308d4f4b-493e-ed41-5aec-97b4789fb12c",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/params1",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583093792,
"name": "/json/params1-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"id\":\"test\",\n\t\"msg\":\"testmsg\"\n}"
},
{
"id": "317dfa64-1b31-e0b9-b9b0-50e7430455ee",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/paramsobject?name=name&age=34",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "name",
"value": "name",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "34",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583810467,
"name": "/paramsobject-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"name\":\"test\",\n\t\"age\":11\n}"
},
{
"id": "687c99c6-75b5-6c17-b93a-da10735a14dc",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/paramsobject1",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "name",
"value": "dd",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "age",
"value": "444",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584249114,
"name": "/paramsobject1-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "7060e912-d5d0-1731-9385-ce25fd0e88ff",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/form/paramsobject",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "name",
"value": "张三",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "age",
"value": "14",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582834878,
"name": "/form/paramsobject-body ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "790f2d92-7482-de03-3fc1-56ae53635471",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/form/paramsobject?name=dddd&age=44",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [
{
"key": "name",
"value": "dddd",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "44",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582826381,
"name": "/form/paramsobject-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "8654a7de-9249-0f63-4b78-243e2524f6a6",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/paramsobject1?name=name&age=344",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "name",
"value": "name",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "344",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584216952,
"name": "/paramsobject1-url no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "86bbfbce-1fb2-2c85-4036-f1d6605046af",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/paramsobject1",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583920864,
"name": "/paramsobject1-body ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"name\":\"testbody\",\n\t\"age\":34\n}"
},
{
"id": "8dbe5329-7512-528d-61b2-df1f376ba48e",
"headers": "",
"headerData": [],
"url": "http://localhost:8080/multipart/upload",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "file",
"value": "kv_chaincode.go",
"description": "",
"type": "file",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564623902014,
"name": "/upload",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "978d45f7-4673-4196-cacb-553699863f1d",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "/form/noparam",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582895759,
"name": "http://localhost:8080/form/noparam",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "9f923f96-17e7-7a56-f044-f5962e47d046",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/noparam",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582948348,
"name": "/json/noparam",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": ""
},
{
"id": "a3bd7e77-ada4-4842-e5e9-d9869b30d0ab",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/params",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582971271,
"name": "/json/params-url-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"id\":\"test\",\n\t\"msg\":\"testmsg\"\n}"
},
{
"id": "bb8e21af-5acf-9f05-9c34-5f0425055e97",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/form/paramsobject1",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "name",
"value": "张三",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "age",
"value": "14",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582811910,
"name": "/form/paramsobject1-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "c317bed2-1ab8-4ac0-1570-72de93f140cd",
"headers": "",
"headerData": [],
"url": "http://localhost:8080/multipart/uploadFileParam",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "file",
"value": "kv_chaincode.go",
"description": "",
"type": "file",
"enabled": true
},
{
"key": "msg",
"value": "sss",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564624976358,
"name": "/uploadFileParam",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "c804a86e-a365-8b2a-6ceb-c548fc1d2f15",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/params1?id=1&msg=2",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "id",
"value": "1",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "msg",
"value": "2",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583107550,
"name": "/json/params1-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"id\":\"test\",\n\t\"msg\":\"testmsg\"\n}"
},
{
"id": "cecfce52-448e-1016-946d-b6e4e50561d2",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/params1",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "id",
"value": "sss",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "msg",
"value": "ddd",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583767966,
"name": "/params1-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "e86731bb-9efb-0cb9-7df7-19cafbe581cd",
"headers": "",
"headerData": [],
"url": "http://localhost:8080/multipart/params?id=1&msg=1",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [
{
"key": "id",
"value": "1",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "msg",
"value": "1",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584016104,
"name": "/params-url ok",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "e90f5a7b-e924-131e-0b2a-0dd6a467c222",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/multipart/paramsobject",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "name",
"value": "dd",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "age",
"value": "11",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584163217,
"name": "/paramsobject-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "f905ac7b-953a-88c7-00b2-d8b936be4207",
"headers": "Content-Type: application/x-www-form-urlencoded\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/form/paramsobject1?name=dddd&age=44",
"folder": "74f0c28e-dbc8-969d-f173-6864fb2acfa8",
"queryParams": [
{
"key": "name",
"value": "dddd",
"equals": true,
"description": "",
"enabled": true
},
{
"key": "age",
"value": "44",
"equals": true,
"description": "",
"enabled": true
}
],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "urlencoded",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564582819307,
"name": "/form/paramsobject1-url no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
},
{
"id": "fb811f2b-03b1-23b3-3077-5c56edf8a030",
"headers": "Content-Type: application/json\n",
"headerData": [
{
"key": "Content-Type",
"value": "application/json",
"description": "",
"enabled": true
}
],
"url": "http://localhost:8080/json/paramsobject",
"folder": "1759fa83-80ac-112b-d732-ef84cef8b692",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [],
"dataMode": "raw",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564583824765,
"name": "/paramsobject-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": [],
"rawModeData": "{\n\t\"name\":\"test\",\n\t\"age\":11\n}"
},
{
"id": "fc04a41c-6123-d2ce-81f1-96ec54989acc",
"headers": "",
"headerData": [],
"url": "http://localhost:8080/multipart/params",
"folder": "70d362df-168c-a821-3b29-cac943e77301",
"queryParams": [],
"preRequestScript": null,
"pathVariables": {},
"pathVariableData": [],
"method": "POST",
"data": [
{
"key": "id",
"value": "sss",
"description": "",
"type": "text",
"enabled": true
},
{
"key": "msg",
"value": "ddd",
"description": "",
"type": "text",
"enabled": true
}
],
"dataMode": "params",
"tests": null,
"currentHelper": "normal",
"helperAttributes": {},
"time": 1564584036668,
"name": "/params-body no",
"description": "",
"collectionId": "a8b343a0-434d-0f97-0757-65cc1e9591b7",
"responses": []
}
]
}
1.3、其他针对
spring的requestbody，requestparam等参看 012-Spring Boot web【一】web项目搭建、请求参数、RestController、使用jsp、freemarker，web容器tomcat和jetty
二、常用http client 介绍
spring常用客户端模板工具：RestTemplate
常用http客户端：jdk的HttpURLConnection【默认】、apache的httpClient、okhttp3等
2.1、连接模板RestTemplate
RestTemplate是spring的一个rest客户端，在spring-web这个包下.
RestTemplate只是对其它Rest客户端的一个封装，本身并没有自己的实现。只不过里面添加了默认实现
在ClientHttpRequestFactory的实现那张图中列出了RestTemplate的几种REST Client的封装。在没有第三方依赖的情况下其默认实现是URLConnection。
常用的有以下三种：
SimpleClientHttpRequestFactory（封装URLConnection）
HttpComponentsClientHttpRequestFactory（封装HttpClient）
OkHttp3ClientHttpRequestFactory(封装OKHttp)
2.2.1、SimpleClientHttpRequestFactory使用【模式实现】
@Test
public void noparam() {
RestTemplate restTemplate = new RestTemplate(new SimpleClientHttpRequestFactory());
// new RestTemplate(); 等价于 new RestTemplate(new SimpleClientHttpRequestFactory());
String s = restTemplate.postForObject("http://localhost:8080/form/noparam", null, String.class);
System.out.println(s);
}
2.2.1、HttpComponentsClientHttpRequestFactory使用
pom依赖
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.6</version>
</dependency>
如果没有pom导入apache httpclient使用下属会报错
@Test
public void noparam2() {
RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory());
String s = restTemplate.postForObject("http://localhost:8080/form/noparam", null, String.class);
System.out.println(s);
}
2.2.1、OkHttp3ClientHttpRequestFactory使用
pom依赖
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>4.0.0</version>
</dependency>
代码
@Test
public void noparam3() {
RestTemplate restTemplate = new RestTemplate(new OkHttp3ClientHttpRequestFactory());
String s = restTemplate.postForObject("http://localhost:8080/form/noparam", null, String.class);
System.out.println(s);
}
由上述可见RestTemplate规避了底层实现。
一般选用一种httpclient实现即可
2.2、okhttp3使用
2.3、apache的httpclient使用
三、Http连接池
有限资源使用，就需要连接池
如果不复用连接池，会有多少发多少，浪费资源以及拖垮机器
3.1、RestTemplate配合实现端连接池
3.1.1、结合SimpleClientHttpRequestFactory
没有连接池实现，但是可以增加配置参数
@Test
public void SimpleClientHttpRequestFactoryPool() {
SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
requestFactory.setReadTimeout(5000);
requestFactory.setConnectTimeout(5000); // 添加转换器
List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
messageConverters.add(new StringHttpMessageConverter(Charset.forName("UTF-8")));
messageConverters.add(new FormHttpMessageConverter());
// messageConverters.add(new MappingJackson2XmlHttpMessageConverter());
messageConverters.add(new MappingJackson2HttpMessageConverter()); RestTemplate restTemplate = new RestTemplate(messageConverters);
restTemplate.setRequestFactory(requestFactory);
restTemplate.setErrorHandler(new DefaultResponseErrorHandler()); String s = restTemplate.postForObject("http://localhost:8080/form/noparam", null, String.class);
System.out.println(s);
}
配置
3.1.2、结合Httpclient连接池的方式【推荐】
可以通过xml或者java类bean方式
spring xml
<!--使用httpclient的实现，带连接池-->
<!--在httpclient4.3版本后才有-->
<bean id="httpClientBuilder" class="org.apache.http.impl.client.HttpClientBuilder" factory-method="create">
<property name="connectionManager">
<bean class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager">
<!--整个连接池的并发-->
<property name="maxTotal" value="50"/>
<!--每个主机的并发-->
<property name="defaultMaxPerRoute" value="50"/>
</bean>
</property>
<!--开启重试-->
<property name="retryHandler">
<bean class="org.apache.http.impl.client.DefaultHttpRequestRetryHandler">
<constructor-arg value="2"/>
<constructor-arg value="true"/>
</bean>
</property>
<property name="defaultHeaders">
<list>
<bean class="org.apache.http.message.BasicHeader">
<constructor-arg value="Content-Type"/>
<constructor-arg value="text/html;charset=UTF-8"/>
</bean>
<bean class="org.apache.http.message.BasicHeader">
<constructor-arg value="Accept-Encoding"/>
<constructor-arg value="gzip,deflate"/>
</bean>
<bean class="org.apache.http.message.BasicHeader">
<constructor-arg value="Accept-Language"/>
<constructor-arg value="zh-CN"/>
</bean>
</list>
</property>
</bean> <bean id="httpClient" factory-bean="httpClientBuilder" factory-method="build"/> <bean id="restTemplate" class="org.springframework.web.client.RestTemplate">
<!-- <property name="messageConverters">-->
<!-- <list value-type="org.springframework.http.converter.HttpMessageConverter">-->
<!-- <bean class="org.springframework.http.converter.StringHttpMessageConverter">-->
<!-- <property name="supportedMediaTypes">-->
<!-- <value>text/html;charset=UTF-8</value>-->
<!-- </property>-->
<!-- </bean>-->
<!-- <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">-->
<!-- <property name="supportedMediaTypes">-->
<!-- <value>application/json;charset=UTF-8</value>-->
<!-- </property>-->
<!-- </bean>-->
<!-- <bean class="org.springframework.http.converter.ResourceHttpMessageConverter"/>-->
<!-- <bean class="org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter"/>-->
<!-- <bean class="org.springframework.http.converter.FormHttpMessageConverter"/>-->
<!-- <bean class="org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter"/>-->
<!-- </list>-->
<!-- </property>-->
<property name="requestFactory">
<bean class="org.springframework.http.client.HttpComponentsClientHttpRequestFactory">
<constructor-arg ref="httpClient"/>
<!--连接时间(毫秒)-->
<property name="connectTimeout" value="20000"/>
<!--读取时间(毫秒)-->
<property name="readTimeout" value="20000"/>
</bean>
</property>
</bean>
java代码
@Configuration
public class RestTemplateUtil{ @Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
RestTemplate restTemplate = builder.build();
restTemplate.setRequestFactory(clientHttpRequestFactory());
// 使用 utf-8 编码集的 conver 替换默认的 conver（默认的 string conver 的编码集为"ISO-8859-1"）
List<HttpMessageConverter<?>> messageConverters = restTemplate.getMessageConverters();
Iterator<HttpMessageConverter<?>> iterator = messageConverters.iterator();
while (iterator.hasNext()) {
HttpMessageConverter<?> converter = iterator.next();
if (converter instanceof StringHttpMessageConverter) {
iterator.remove();
}
}
messageConverters.add(new StringHttpMessageConverter(Charset.forName("UTF-8"))); return restTemplate;
} @Bean
public HttpClientConnectionManager poolingConnectionManager() {
PoolingHttpClientConnectionManager poolingConnectionManager = new PoolingHttpClientConnectionManager();
poolingConnectionManager.setMaxTotal(1000); // 连接池最大连接数
poolingConnectionManager.setDefaultMaxPerRoute(100); // 每个主机的并发
return poolingConnectionManager;
} @Bean
public HttpClientBuilder httpClientBuilder() {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
//设置HTTP连接管理器
httpClientBuilder.setConnectionManager(poolingConnectionManager());
return httpClientBuilder;
} @Bean
public ClientHttpRequestFactory clientHttpRequestFactory() {
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory();
clientHttpRequestFactory.setHttpClient(httpClientBuilder().build());
clientHttpRequestFactory.setConnectTimeout(6000); // 连接超时，毫秒
clientHttpRequestFactory.setReadTimeout(6000); // 读写超时，毫秒
return clientHttpRequestFactory;
}
}
其中注意
- maxTotal 是整个连接池的最大连接数
- defaultMaxPerRoute 是每个route默认的最大连接数【可以理解为每个url同时请求数】
- setMaxPerRoute(final HttpRoute route, final int max) route的最大连接数，优先于defaultMaxPerRoute。
//defaultMaxPerRoute默认为2，maxTotal默认为20
测试一
服务端处理逻辑 3s
http连接池：maxTotal=50，defaultMaxPerRoute=50
客户端 100个并发请求，分析：约6s执行完毕
@Autowired
private RestTemplate restTemplate;
@Test
public void HttpComponentsClientHttpRequestFactoryPool() throws Exception {
List<Future<String>> list=new ArrayList<Future<String>>();
long start = System.currentTimeMillis();
ExecutorService fixedThreadPool = Executors.newFixedThreadPool(100);
for (int i = 0; i < 100; i++) {
Future<String> submit = fixedThreadPool.submit(() -> {
String s = restTemplate.postForObject("http://localhost:8080/form/noparam", null, String.class);
return s;
});
list.add(submit);
}
fixedThreadPool.shutdown();
System.out.println("装载耗时：" + (System.currentTimeMillis() - start) + "ms");
System.out.println("个数：" + list.size());
for (Future<String> future : list) {
System.out.println(future.get());
}
System.out.println("回调耗时：" + (System.currentTimeMillis() - start) + "ms");
}
输出：
装载耗时：17ms
个数：100
{"code":"2000"}
//……
{"code":"2000"}
总计执行完毕耗时：6200ms
测试二
服务端处理逻辑 3s
http连接池：maxTotal=50，defaultMaxPerRoute=25
客户端 100个并发请求，，分析：约12s执行完毕
装载耗时：28ms
个数：100
{"code":"2000"}
//……
{"code":"2000"}
总计执行完毕耗时：12236ms
3.1.3、结合okhttp3连接池的方式
研究中
3.2、小结
jdk：RestTemplate restTemplate = new RestTemplate(new SimpleClientHttpRequestFactory()); 没有连接池，受服务端连接数限制【如tomcat默认200】，以及客户端请求限制
apache：RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory()); 不配置默认5个，需配置，但也受服务端连接数限制【如tomcat默认200】，以及客户端请求限制
okhttp3：RestTemplate restTemplate = new RestTemplate(new OkHttp3ClientHttpRequestFactory());没有配置连接池，受服务端连接数限制【如tomcat默认200】，以及客户端请求限制
对比
| 客户端 | 连接池 | 推荐 |
| SimpleClientHttpRequestFactory | 无 | 不推荐 |
| HttpComponentsClientHttpRequestFactory | 有 | 推荐 |
| OkHttp3ClientHttpRequestFactory | 无 | 原来手机端常用 |
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