Java微信公众平台开发_07_JSSDK图片上传

一、本节要点

1.获取jsapi_ticket

    //2.获取getJsapiTicket的接口地址,有效期为7200秒
    private static final String GET_JSAPITICKET_URL="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi"; 

/**
     * @desc ：2.获取JsapiTicket
     *
     * @param accessToken  有效凭证
     * @return
     * @throws Exception String
     */
    public static String getJsapiTicket(String accessToken) throws Exception {
        //1.获取请求url
        String url=GET_JSAPITICKET_URL.replace("ACCESS_TOKEN", accessToken);

        //2.发起GET请求，获取返回结果
        JSONObject jsonObject=HttpHelper.doGet(url);
        logger.info("jsonObject:"+jsonObject.toJSONString());

        //3.解析结果，获取accessToken
        String jsapiTicket="";
        if (null != jsonObject) {
            //4.错误消息处理
            if (jsonObject.getInteger("errcode")!=null && 0 != jsonObject.getInteger("errcode")) {
                int errCode = jsonObject.getInteger("errcode");
                String errMsg = jsonObject.getString("errmsg");
                throw new Exception("error code:"+errCode+", error message:"+errMsg);
                //5.成功获取jsapiTicket
            }else {
                jsapiTicket=jsonObject.getString("ticket");
            }
        }  

        return jsapiTicket;
    }

2.JS-SDK 使用权限签名算法

    /**
     * @desc ：4.获取前端jsapi需要的配置参数
     *
     * @param request
     * @return String
     */
    public static String getJsapiConfig(HttpServletRequest request){  

        //1.准备好参与签名的字段
        //1.1 url
        /*
         *以http://localhost/test.do?a=b&c=d为例
         *request.getRequestURL的结果是http://localhost/test.do
         *request.getQueryString的返回值是a=b&c=d
         */
        String urlString = request.getRequestURL().toString();
        String queryString = request.getQueryString();
        String queryStringEncode = null;
        String url;
        if (queryString != null) {
            queryStringEncode = URLDecoder.decode(queryString);
            url = urlString + "?" + queryStringEncode;
        } else {
            url = urlString;
        }

        //1.2 noncestr
        String nonceStr=UUID.randomUUID().toString();      //随机数
        //1.3 timestamp
        long timeStamp = System.currentTimeMillis() / 1000;     //时间戳参数  

        String signedUrl = url;

        String accessToken = null;
        String ticket = null;

        String signature = null;       //签名

        try {
            //1.4 jsapi_ticket
            accessToken=getAccessToken(Env.APP_ID, Env.APP_SECRET);
            ticket=getJsapiTicket(accessToken);  

            //2.进行签名，获取signature
            signature=getSign(ticket,nonceStr,timeStamp,signedUrl);  

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }  

        logger.info("accessToken:"+accessToken);
        logger.info("ticket:"+ticket);
        logger.info("nonceStr:"+nonceStr);
        logger.info("timeStamp:"+timeStamp);
        logger.info("signedUrl:"+signedUrl);
        logger.info("signature:"+signature);
        logger.info("appId:"+Env.APP_ID);

        String configValue = "{signature:'" + signature + "',nonceStr:'" + nonceStr + "',timeStamp:'"
                + timeStamp + "',appId:'" + Env.APP_ID + "'}";
        logger.info("configValue:"+configValue);

        return configValue;
    }  

    /**
     * @desc ： 4.1 生成签名的函数
     *
     * @param ticket jsticket
     * @param nonceStr 随机串，自己定义
     * @param timeStamp 生成签名用的时间戳
     * @param url 需要进行免登鉴权的页面地址，也就是执行dd.config的页面地址
     * @return
     * @throws Exception String
     */

    public static String getSign(String jsTicket, String nonceStr, Long timeStamp, String url) throws Exception {
        String plainTex = "jsapi_ticket=" + jsTicket + "&noncestr=" + nonceStr + "&timestamp=" + timeStamp + "&url=" + url;
        System.out.println(plainTex);
        try {
            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
            crypt.reset();
            crypt.update(plainTex.getBytes("UTF-8"));
            return byteToHex(crypt.digest());
        } catch (NoSuchAlgorithmException e) {
            throw new Exception(e.getMessage());
        } catch (UnsupportedEncodingException e) {
            throw new Exception(e.getMessage());
        }
    }  

    /**
     * @desc ：4.2 将bytes类型的数据转化为16进制类型
     *
     * @param hash
     * @return
     *   String
     */
    private static String byteToHex(byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", new Object[] { Byte.valueOf(b) });
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }

2.1 签名生成规则

（1）参与签名的字段包括：

noncestr（随机字符串）,

有效的jsapi_ticket,

timestamp（时间戳）,

url（当前网页的URL，不包含#及其后面部分） 。

（2）对所有待签名参数按照字段名的ASCII 码从小到大排序（字典序）后，使用URL键值对的格式 （即 key1=value1&key2=value2…）拼接成字符串string1。这里需要注意的是所有参数名均为小写字符。对string1作sha1加密，字段名和字段值都采用原始值，不进行URL 转义。

（3）对string1进行sha1签名，得到signature：

2.2 签名算法应用实例

（1）待签名参数：

      noncestr=Wm3WZYTPz0wzccnW

      jsapi_ticket=sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg

      timestamp=1414587457

      url=http://mp.weixin.qq.com

（2）字典序

string1=jsapi_ticket=sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg&noncestr=Wm3WZYTPz0wzccnW&timestamp=1414587457&url=http://mp.weixin.qq.com

（3）sha1加密

signature=sha1(string1)

3.JS-SDK使用步骤

（1）绑定域名

测试号：

（2）引入JS文件

在需要调用JS接口的页面引入如下JS文件，（支持https）：http://res.wx.qq.com/open/js/jweixin-1.2.0.js

<script type="text/javascript"  src="http://res.wx.qq.com/open/js/jweixin-1.2.0.js"></script>

（3）通过config接口注入权限验证配置

//1.jsapi签名校验
wx.config({
    beta: true,// 必须这么写，否则在微信插件有些jsapi会有问题
    debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
    appId: _config.appId, // 必填，公众号的唯一标识
    timestamp: _config.timeStamp, // 必填，生成签名的时间戳
    nonceStr: _config.nonceStr, // 必填，生成签名的随机串
    signature: _config.signature,// 必填，签名，见附录1
    jsApiList: [ 'checkJsApi', 'onMenuShareAppMessage',
        'onMenuShareWechat', 'startRecord', 'stopRecord',
        'onVoiceRecordEnd', 'playVoice', 'pauseVoice', 'stopVoice',
        'uploadVoice', 'downloadVoice', 'chooseImage',
        'previewImage', 'uploadImage', 'downloadImage',
        'getNetworkType', 'openLocation', 'getLocation',
        'hideOptionMenu', 'showOptionMenu', 'hideMenuItems',
        'showMenuItems', 'hideAllNonBaseMenuItem',
        'showAllNonBaseMenuItem', 'closeWindow', 'scanQRCode',
        'previewFile', 'openEnterpriseChat',
        'selectEnterpriseContact','chooseInvoice'

        ]// 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});

（4）通过ready接口处理成功验证

（5） 通过error接口处理失败验证

//2.jsapi签名校验失败后执行error
wx.error(function(err){
    alert('wx error: ' + JSON.stringify(err));
    // config信息验证失败会执行error函数，如签名过期导致验证失败，具体错误信息可以打开config的debug模式查看，也可以在返回的res参数中查看，对于SPA可以在这里更新签名。
});

4.图片上传

4.1 图片上传的流程

（1）使用 jssdk 上传图片到微信服务器，返回图片对应的mediaId( 即 serverId)

    //2.2 上传图片
    var images = {
            localId : [],
            serverId : []
    };
    $("#uploadImg").click(function(){
        //2.2.1拍照或从手机相册中选图
        wx.chooseImage({
            success : function(res) {
                images.localId = res.localIds;
                alert('已选择 ' + res.localIds.length + ' 张图片');
                //2.2.2 上传图片
                uploadImg();
            }
        });
    });

    // 2.2.2 上传图片
    function uploadImg() {
        if (images.localId.length == 0) {
            alert('请先使用 chooseImage 接口选择图片');
            return;
        }
        var i = 0, length = images.localId.length;
        images.serverId = [];

        function upload() {
            wx.uploadImage({
                localId : images.localId[i],
                success : function(res) {
                    i++;
                    alert('已上传：' + i + '/' + length);
                    images.serverId.push(res.serverId);
                    //将serverId上传至服务器
                    alert("ajax请求即将执行--");

                    $.ajax({
                        type : "POST",
                        url : "http://se9mxs.natappfree.cc/weixin_gz/uploadimg",
                        data : {
                            serverId : res.serverId
                        },
                        dataType : "text",
                        success : function(data) {
                            alert(data);
                        }

                    });

                    if (i < length) {
                        upload();
                    }
                },
                fail : function(res) {
                    alert(JSON.stringify(res));
                }
            });
        }
        upload();
    };

（2）使用素材管理接口，根据 mediaId 从微信服务器将图片下载至服务器本地。参见：Java微信公众平台开发_06_素材管理

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String mediaId=request.getParameter("serverId");
        System.out.println("serverId:"+mediaId);

        try {
            String accessToken=AuthHelper.getAccessToken(Env.APP_ID, Env.APP_SECRET);

            //String savePath=System.getProperty("user.dir").replaceAll("\\\\", "/")+"/WebContent/img/"+mediaId+".png";
            String fileDir=request.getSession().getServletContext().getRealPath("").replaceAll("\\\\", "/")+"/img/";
            System.out.println("fileDir:"+fileDir);

            //2.调用业务类，获取临时素材
            TempMaterialService.getTempMaterial(accessToken, mediaId, fileDir);

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        PrintWriter out = response.getWriter();
        out.print("HHHHHHHHHH");
        out.close();
        out = null;  

    }

二、代码实现

1.前端页面—uploadImg.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSSDK之上传图片</title>
<script src="js/jquery-3.2.1.min.js"></script>
<script type="text/javascript"
    src="http://res.wx.qq.com/open/js/jweixin-1.2.0.js"></script>

<script type="text/javascript">
    var _config =
<%=com.ray.weixin.gz.util.AuthHelper.getJsapiConfig(request)%>
    ;
</script>

<script type="text/javascript" src="js/auth.js"></script>

</head>
<body>

    <div align="center">
        <img id="userImg" alt="头像" src="">
    </div>

    <div align="center">
        <span>UserName:</span>
        <div id="userName" style="display: inline-block"></div>
    </div>

    <div align="center">
        <span>UserId:</span>
        <div id="userId" style="display: inline-block"></div>
    </div>

    <div align="center">
        <span class="desc">是否验证成功</span>
        <button class="btn btn_primary" id="yanzheng">验证</button>
    </div>

    <div align="center">
        <span class="desc">测试按钮</span>
        <button class="btn btn_primary" id="ceshi">测试</button>
    </div>

    <div align="center">
        <span class="desc">上传图片按钮</span>
        <button class="btn btn_primary" id="uploadImg">上传图片</button>
    </div>

    <div align="center">
        <span class="desc">拍照上传图片按钮</span>
        <button class="btn btn_primary" id="uploadImgFromCamera">拍照上传</button>
    </div>

    <div align="center">
        <span class="desc">扫码按钮</span>
        <button class="btn btn_primary" id="qrcode" >扫码</button>
    </div>
</body>
</html>

auth.js

//1.jsapi签名校验
wx.config({
    beta: true,// 必须这么写，否则在微信插件有些jsapi会有问题
    debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
    appId: _config.appId, // 必填，公众号的唯一标识
    timestamp: _config.timeStamp, // 必填，生成签名的时间戳
    nonceStr: _config.nonceStr, // 必填，生成签名的随机串
    signature: _config.signature,// 必填，签名，见附录1
    jsApiList: [ 'checkJsApi', 'onMenuShareAppMessage',
        'onMenuShareWechat', 'startRecord', 'stopRecord',
        'onVoiceRecordEnd', 'playVoice', 'pauseVoice', 'stopVoice',
        'uploadVoice', 'downloadVoice', 'chooseImage',
        'previewImage', 'uploadImage', 'downloadImage',
        'getNetworkType', 'openLocation', 'getLocation',
        'hideOptionMenu', 'showOptionMenu', 'hideMenuItems',
        'showMenuItems', 'hideAllNonBaseMenuItem',
        'showAllNonBaseMenuItem', 'closeWindow', 'scanQRCode',
        'previewFile', 'openEnterpriseChat',
        'selectEnterpriseContact','chooseInvoice'

        ]// 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});

//2.jsapi签名校验成功后执行ready
wx.ready(function(){
    // config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，则须把相关接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。

    //2.1 提示jsapi签名验证成功
    $("#yanzheng").html("验证成功");  

    $("#ceshi").click(function(){
        alert("ceshiaaa");

    });

    $("#checkJsApi").click(function(){
        wx.checkJsApi({
            jsApiList: [ 'checkJsApi', 'onMenuShareAppMessage',
                'onMenuShareWechat', 'startRecord', 'stopRecord',
                'onVoiceRecordEnd', 'playVoice', 'pauseVoice', 'stopVoice',
                'uploadVoice', 'downloadVoice', 'chooseImage',
                'previewImage', 'uploadImage', 'downloadImage',
                'getNetworkType', 'openLocation', 'getLocation',
                'hideOptionMenu', 'showOptionMenu', 'hideMenuItems',
                'showMenuItems', 'hideAllNonBaseMenuItem',
                'showAllNonBaseMenuItem', 'closeWindow', 'scanQRCode',
                'previewFile', 'openEnterpriseChat',
                'selectEnterpriseContact','chooseInvoice'

                ], // 需要检测的JS接口列表，所有JS接口列表见附录2,
                success: function(res) {
                    // 以键值对的形式返回，可用的api值true，不可用为false
                    // 如：{"checkResult":{"chooseImage":true},"errMsg":"checkJsApi:ok"}
                }
        });

    });

    //2.2 上传图片
    var images = {
            localId : [],
            serverId : []
    };
    $("#uploadImg").click(function(){
        //2.2.1拍照或从手机相册中选图
        wx.chooseImage({
            success : function(res) {
                images.localId = res.localIds;
                alert('已选择 ' + res.localIds.length + ' 张图片');
                //2.2.2 上传图片
                uploadImg();
            }
        });
    });

    // 2.2.2 上传图片
    function uploadImg() {
        if (images.localId.length == 0) {
            alert('请先使用 chooseImage 接口选择图片');
            return;
        }
        var i = 0, length = images.localId.length;
        images.serverId = [];

        function upload() {
            wx.uploadImage({
                localId : images.localId[i],
                success : function(res) {
                    i++;
                    alert('已上传：' + i + '/' + length);
                    images.serverId.push(res.serverId);
                    //将serverId上传至服务器
                    alert("ajax请求即将执行--");

                    $.ajax({
                        type : "POST",
                        url : "http://se9mxs.natappfree.cc/weixin_gz/uploadimg",
                        data : {
                            serverId : res.serverId
                        },
                        dataType : "text",
                        success : function(data) {
                            alert(data);
                        }

                    });

                    if (i < length) {
                        upload();
                    }
                },
                fail : function(res) {
                    alert(JSON.stringify(res));
                }
            });
        }
        upload();
    };

    //2.3 扫一扫
    $("#qrcode").click(function(){
        wx.scanQRCode({
            needResult: 1, // 默认为0，扫描结果由微信处理，1则直接返回扫描结果，
            scanType: ["qrCode","barCode"], // 可以指定扫二维码还是一维码，默认二者都有
            success: function (res) {
                var result = res.resultStr; // 当needResult 为 1 时，扫码返回的结果
                alert(result);

            },
            fail:function (res) {
                var result = res.resultStr; // 当needResult 为 1 时，扫码返回的结果
                alert(result);

            }
        });

    });

    //2.4 拉起发票列表
    //注意，调用此接口时，config接口必须传入beta参数。
    $("#showInvoice").click(function(){
        alert("timestamp:"+invoice_config.timestamp);
        alert("nonceStr:"+invoice_config.nonceStr);
        alert("signType:"+invoice_config.signType);
        alert("cardSign:"+invoice_config.cardSign);

        wx.invoke('chooseInvoice', {
            'timestamp': invoice_config.timestamp, // 卡券签名时间戳
            'nonceStr' : invoice_config.nonceStr, // 卡券签名随机串
            'signType' : invoice_config.signType, // 签名方式，默认'SHA1'
            'cardSign' : invoice_config.cardSign, // 卡券签名
        }, function(res) {
            // 这里是回调函数
            alert("aaaaaa");
            alert(JSON.stringify(res)); // 返回的结果
        });

    });

});

//2.jsapi签名校验失败后执行error
wx.error(function(err){
    alert('wx error: ' + JSON.stringify(err));
    // config信息验证失败会执行error函数，如签名过期导致验证失败，具体错误信息可以打开config的debug模式查看，也可以在返回的res参数中查看，对于SPA可以在这里更新签名。
});

2.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name>weixin_gz</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

  <!--微信公众号回调-->
    <servlet>
        <servlet-name>weixin</servlet-name>
        <servlet-class>com.ray.weixin.gz.controller.WeiXinServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>weixin</servlet-name>
        <url-pattern>/weixin</url-pattern>
    </servlet-mapping>
    <!-- 微信公众号回调-->

  <servlet>
    <description></description>
    <display-name>uploadimg</display-name>
    <servlet-name>uploadimg</servlet-name>
    <servlet-class>com.ray.weixin.gz.controller.UploadImgServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>uploadimg</servlet-name>
    <url-pattern>/uploadimg</url-pattern>
  </servlet-mapping>

</web-app>

3.上传图片servlet—UploadImgServlet

package com.ray.weixin.gz.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ray.weixin.gz.config.Env;
import com.ray.weixin.gz.service.tempmaterial.TempMaterialService;
import com.ray.weixin.gz.util.AuthHelper;

/**
 * Servlet implementation class UploadImgServlet
 */
public class UploadImgServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public UploadImgServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.getWriter().append("Served at: ").append(request.getContextPath());
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String mediaId=request.getParameter("serverId");
        System.out.println("serverId:"+mediaId);

        try {
            String accessToken=AuthHelper.getAccessToken(Env.APP_ID, Env.APP_SECRET);

            //String savePath=System.getProperty("user.dir").replaceAll("\\\\", "/")+"/WebContent/img/"+mediaId+".png";
            String fileDir=request.getSession().getServletContext().getRealPath("").replaceAll("\\\\", "/")+"/img/";
            System.out.println("fileDir:"+fileDir);

            //2.调用业务类，获取临时素材
            TempMaterialService.getTempMaterial(accessToken, mediaId, fileDir);

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        PrintWriter out = response.getWriter();
        out.print("HHHHHHHHHH");
        out.close();
        out = null;  

    }

}

4.素材管理业务类—TempMaterialService.java

package com.ray.weixin.gz.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ray.weixin.gz.config.Env;
import com.ray.weixin.gz.service.tempmaterial.TempMaterialService;
import com.ray.weixin.gz.util.AuthHelper;

/**
 * Servlet implementation class UploadImgServlet
 */
public class UploadImgServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public UploadImgServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.getWriter().append("Served at: ").append(request.getContextPath());
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String mediaId=request.getParameter("serverId");
        System.out.println("serverId:"+mediaId);

        try {
            String accessToken=AuthHelper.getAccessToken(Env.APP_ID, Env.APP_SECRET);

            //String savePath=System.getProperty("user.dir").replaceAll("\\\\", "/")+"/WebContent/img/"+mediaId+".png";
            String fileDir=request.getSession().getServletContext().getRealPath("").replaceAll("\\\\", "/")+"/img/";
            System.out.println("fileDir:"+fileDir);

            //2.调用业务类，获取临时素材
            TempMaterialService.getTempMaterial(accessToken, mediaId, fileDir);

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        PrintWriter out = response.getWriter();
        out.print("HHHHHHHHHH");
        out.close();
        out = null;  

    }

}

其他的同上一节