java Webservice(一)HttpClient远程调用

我们将Web Service发布在Tomcat或者其他应用服务器上后，有很多方法可以调用该Web Service，常用的有两种：

1、通过浏览器HTTP调用，返回规范的XML文件内容
      2、通过客户端程序调用，返回结果可自定义格式

接下来，我利用Eclipse作为开发工具，演示一个Httpclient调用WebService的简单示例
      第一种调用见我的另一篇博文：http://www.cnblogs.com/lanxuezaipiao/archive/2013/05/10/3071584.html
      步骤如下： 
     
     准备工作：用到的jar包有： 下载链接（http://download.csdn.net/detail/lanxuezaipiao/5354480）
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第一步：新建Java Project，项目名称为HttpCallWebService

第二步：将所需jar包导入到库中

第三步：编写调用class，这里有两种方式调用，即GET方式和POST方式，由于POST方式较安全，故这里采用POST方式调用；请求数据的构造也有两种方式：静态和动态构造，下面分别介绍这两种方式：

注：这里以E邮宝开放的webservice接口为例调用其中一个API函数，而E邮宝的webservice基于SOAP，故请求数据为SOAP格式，大家可根据自己情况进行修改

静态构造请求数据：

 package com.http;

 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;

 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.HttpException;
 import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
 import org.apache.commons.httpclient.methods.PostMethod;
 import org.apache.commons.httpclient.methods.RequestEntity;

 public class StaticHttpclientCall {

     /**
      * @param args
      * @throws IOException
      * @throws HttpException
      */
     public static void main(String[] args) throws HttpException, IOException {
         // TODO Auto-generated method stub

         String soapRequestData = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
                 + "<soap12:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""
                 + " xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\""
                 + " xmlns:soap12=\"http://www.w3.org/2003/05/soap-envelope\">"
                 + " <soap12:Body>"
                 + " <GetAPACShippingPackage xmlns=\"http://shippingapi.ebay.cn/\">"
                 + " <GetAPACShippingPackageRequest>"
                 + " <TrackCode>123</TrackCode>"
                 + " <Version>123</Version>"
                 + " <APIDevUserID>123</APIDevUserID>"
                 + " <APIPassword>123</APIPassword>"
                 + " <APISellerUserID>123</APISellerUserID>"
                 + " <MessageID>123</MessageID>"
                 + " </GetAPACShippingPackageRequest>"
                 + " </GetAPACShippingPackage>" + "</soap12:Body>"
                 + " </soap12:Envelope>";

         System.out.println(soapRequestData);

         PostMethod postMethod = new PostMethod(
                 "http://epacketws.pushauction.net/v3/orderservice.asmx?wsdl");

         // 然后把Soap请求数据添加到PostMethod中
         byte[] b = soapRequestData.getBytes("utf-8");
         InputStream is = new ByteArrayInputStream(b, 0, b.length);
         RequestEntity re = new InputStreamRequestEntity(is, b.length,
                 "application/soap+xml; charset=utf-8");
         postMethod.setRequestEntity(re);

         // 最后生成一个HttpClient对象，并发出postMethod请求
         HttpClient httpClient = new HttpClient();
         int statusCode = httpClient.executeMethod(postMethod);
         if(statusCode == 200) {
             System.out.println("调用成功！");
             String soapResponseData = postMethod.getResponseBodyAsString();
             System.out.println(soapResponseData);
         }
         else {
             System.out.println("调用失败！错误码：" + statusCode);
         }

     }

 }

动态构造数据：

 package com.http;

 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;

 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
 import org.apache.commons.httpclient.methods.PostMethod;
 import org.apache.commons.httpclient.methods.RequestEntity;

 // 动态构造调用串，灵活性更大
 public class DynamicHttpclientCall {

     private String namespace;
     private String methodName;
     private String wsdlLocation;
     private String soapResponseData;

     public DynamicHttpclientCall(String namespace, String methodName,
             String wsdlLocation) {

         this.namespace = namespace;
         this.methodName = methodName;
         this.wsdlLocation = wsdlLocation;
     }

     private int invoke(Map<String, String> patameterMap) throws Exception {
         PostMethod postMethod = new PostMethod(wsdlLocation);
         String soapRequestData = buildRequestData(patameterMap);

         byte[] bytes = soapRequestData.getBytes("utf-8");
         InputStream inputStream = new ByteArrayInputStream(bytes, 0,
                 bytes.length);
         RequestEntity requestEntity = new InputStreamRequestEntity(inputStream,
                 bytes.length, "application/soap+xml; charset=utf-8");
         postMethod.setRequestEntity(requestEntity);

         HttpClient httpClient = new HttpClient();
         int statusCode = httpClient.executeMethod(postMethod);
         soapResponseData = postMethod.getResponseBodyAsString();

         return statusCode;
     }

     private String buildRequestData(Map<String, String> patameterMap) {
         StringBuffer soapRequestData = new StringBuffer();
         soapRequestData.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
         soapRequestData
                 .append("<soap12:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""
                         + " xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\""
                         + " xmlns:soap12=\"http://www.w3.org/2003/05/soap-envelope\">");
         soapRequestData.append("<soap12:Body>");
         soapRequestData.append("<" + methodName + " xmlns=\"" + namespace
                 + "\">");
         soapRequestData.append("<" + methodName + "Request>");

         Set<String> nameSet = patameterMap.keySet();
         for (String name : nameSet) {
             soapRequestData.append("<" + name + ">" + patameterMap.get(name)
                     + "</" + name + ">");
         }

         soapRequestData.append("</" + methodName + "Request>");
         soapRequestData.append("</" + methodName + ">");
         soapRequestData.append("</soap12:Body>");
         soapRequestData.append("</soap12:Envelope>");

         return soapRequestData.toString();
     }

     /**
      * @param args
      * @throws Exception
      */
     public static void main(String[] args) throws Exception {
         // TODO Auto-generated method stub

         DynamicHttpclientCall dynamicHttpclientCall = new DynamicHttpclientCall(
                 "http://shippingapi.ebay.cn/", "GetAPACShippingPackage",
                 "http://epacketws.pushauction.net/v3/orderservice.asmx?wsdl");

         Map<String, String> patameterMap = new HashMap<String, String>();

         patameterMap.put("TrackCode", "123");
         patameterMap.put("Version", "123");
         patameterMap.put("APIDevUserID", "123");
         patameterMap.put("APIPassword", "123");
         patameterMap.put("APISellerUserID", "123");
         patameterMap.put("MessageID", "123");
         patameterMap.put("TrackCode", "123");

         String soapRequestData = dynamicHttpclientCall.buildRequestData(patameterMap);
         System.out.println(soapRequestData);

         int statusCode = dynamicHttpclientCall.invoke(patameterMap);
         if(statusCode == 200) {
             System.out.println("调用成功！");
             System.out.println(dynamicHttpclientCall.soapResponseData);
         }
         else {
             System.out.println("调用失败！错误码：" + statusCode);
         }

     }

 }

最终运行结果：

aaarticlea/png;base64,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" alt="" />

package httpclient;

import java.io.IOException;
import java.net.URLEncoder;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;

public class HttpClientTest {

public static void main(String[] args) throws Exception{
String url = "/webservices/DomesticAirline.asmx/getDomesticAirlinesTime";
String host = "www.webxml.com.cn";
String param = "startCity="+URLEncoder.encode("杭州", "utf-8")+"&lastCity=&theDate=&userID=";
HttpClient httpClient = new HttpClient();
httpClient.getHostConfiguration().setHost(host, 80, "http");

HttpMethod method = getMethod(url, param);
//HttpMethod method = postMethod(url);

httpClient.executeMethod(method);

String response = method.getResponseBodyAsString();
//String response = new String(method.getResponseBodyAsString().getBytes("ISO-8859-1"));
System.out.println(response);
}

private static HttpMethod getMethod(String url,String param) throws IOException{
GetMethod get = new GetMethod(url+"?"+param);
get.releaseConnection();
return get;
}

private static HttpMethod postMethod(String url) throws IOException{
PostMethod post = new PostMethod(url);
post.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");
NameValuePair[] param = { new NameValuePair("startCity","杭州"),
new NameValuePair("lastCity","沈阳"),
new NameValuePair("userID",""),
new NameValuePair("theDate","") } ;
post.setRequestBody(param);
post.releaseConnection();
return post;
}
}

如果PostMethod提交的是中文字符，需要加上相应的编码格式： post.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");
如果GetMethod提交的参数有中文字符，需要先转换成utf-8格式： URLEncoder.encode("杭州", "utf-8");

1.拳头之Get/Post
拳头是最基本的一重武器，也是最重要的，好比练武之人必须先扎稳马步。

java 代码

 

1. HttpClient httpclient=new HttpClient();//创建一个客户端，类似打开一个浏览器
2. GetMethod getMethod=new GetMethod("http://www.blablabla.com");//创建一个get方法，类似在浏览器地址栏中输入一个地址
3. int statusCode=httpclient.executeMethod(getMethod);//回车——出拳！
4. System.out.println("response=" + getMethod.getResponseBodyAsString());//察看拳头命中情况，可以获得的东西还有很多，比如head, cookies等等
5. getMethod.releaseConnection();//释放，记得收拳哦

2.孔雀翎之支持https

如何支持https?

java 代码

 

1. static{
2. Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443);
3. Protocol.registerProtocol("https", easyhttps);
4. }

在执行具体的http method之前，暗中将https协议注册一把，如孔雀翎暗藏玄机，毙敌于无形。记住，官方的binary发行版本没有ssl的contribute包，方法一是下载源代码版本来打造你的孔雀翎。

3.多情环之cookies
常道人老多情，其实是记忆太多，所以情之所至，正如cookies甜心，无论你走到那，总把你牵挂：

java 代码

 

1. HttpClient httpclient=new HttpClient();
2. httpclient.getParams().setCookiePolicy(CookiePolicy.RFC_2109);//RFC_2109是支持较普遍的一个，还有其他cookie协议
3. HttpState initialState = new HttpState();
4. Cookie cookie=new Cookie();
5. cookie.setDomain("www.balblabla.com");
6. cookie.setPath("/");
7. cookie.setName("多情环");
8. cookie.setValue("多情即无情");
9. initialState.addCookie(cookie);
10. httpclient.setState(initialState);
11. ...

4.离别钩之解构cookies
多情环的反面即离别钩，钩出，敌之身体某个部件即要与身体别离，端的是无情：

java 代码

 

1. ...//执行了某些get/post方法后
2. Cookie[] cookies = httpclient.getState().getCookies();
3. System.out.println("Present cookies: ");
4. for (int i = 0; i < cookies.length; i++) {//循环结构零部件
5. System.out.println(" - " + cookies[i].toExternalForm());
6. System.out.println(" - domain=" + cookies[i].getDomain());
7. System.out.println(" - path=" + cookies[i].getPath());
8. ...
9. }

5.霸王抢之post参数
枪，长兵器之王，诸多名将均使一杆或金或银命名的名枪，比如岳飞。post方法在提交参数对时,犹如灵蛇出洞：

java 代码

 

1. PostMethod postMethod = new PostMethod("http://www.saybot.com/postme");
2. NameValuePair[] postData = new NameValuePair[2];
3. postData[0] = new NameValuePair("武器", "枪");
4. postData[1] = new NameValuePair("什么枪", "神枪");
5. postMethod.addParameters(postData);
6. ...//出枪吧

6.七星碧玉刀之支持代理(proxy)
代理，非常重要，尤其在局域网横行的年头，没有代理，你在公司上不了QQ，没有代理，google不了网页快照，代理之威，可比七星碧玉刀，无刀，在局域网和开发当中，一切白搭：

java 代码

 

1. HttpClient httpclient=new HttpClient();
2. httpClient.getHostConfiguration().setProxy("192.168.0.1", 9527);
3. httpClient.getParams().setAuthenticationPreemptive(true);//重要！！！告诉httpclient，使用抢先认证，否则你会收到“你没有资格”的恶果
4. /*
5. 这一步也至关重要，MyProxyCredentialsProvider实现了org.apache.commons.httpclient.auth.CredentialsProvider接口，
6. 返回代理的credential(username/password)*/
7. httpClient.getParams().setParameter(CredentialsProvider.PROVIDER, new MyProxyCredentialsProvider());
8. httpClient.getState().setProxyCredentials(
9. new AuthScope("192.168.0.1",
10. AuthScope.ANY_PORT, //任意端口哦，可要小心
11. AuthScope.ANY_REALM),//任意域哦，可要小心
12. new UsernamePasswordCredentials("username",//proxy的用户名
13. "password"));//proxy的密码

...