解决spring3.0.5使用RestTemplate发送post请求响应中文乱码问题

说明：

     1：使用spring3.0.5 post响应编码类型，更加请求url响应内容的编码决定，请求的url没有设置响应编码，默认为ISO-8859-1



  2:  使用如下代码解析请求：

package com.spring.rest;

import java.io.IOException;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import ognl.ParseException;

import org.springframework.http.HttpEntity;

import org.springframework.http.HttpHeaders;

import org.springframework.http.MediaType;

import org.springframework.http.converter.HttpMessageConverter;

import org.springframework.http.converter.StringHttpMessageConverter;

import org.springframework.web.client.RestTemplate;

import com.alibaba.fastjson.JSONObject;

public class RestTempLateClient {
/** 

     * 模拟请求 

     *  

     * @param url       资源地址 

     * @param map   参数列表 

     * @param encoding  编码 

     * @return 

     * @throws ParseException 

     * @throws IOException 

     */  

    public static String send(String url, Map<String,Object> map,String encoding) {  

    RestTemplate restTemplate = new RestTemplate();

    //3.1.X以上版本使用

    //restTemplate.getMessageConverters().add(0, StringHttpMessageConverter.DEFAULT_CHARSET);

   

    List<HttpMessageConverter<?>> converterList=restTemplate.getMessageConverters();

    HttpMessageConverter<?> converter = new StringHttpMessageConverter();

    converterList.add(0, converter);

    restTemplate.setMessageConverters(converterList);

    HttpHeaders headers = new HttpHeaders();

    MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");

    headers.setContentType(type);

    headers.add("Accept", MediaType.APPLICATION_JSON.toString());

    //map 转换为json对象

    JSONObject jsonObj = new JSONObject(map);

    HttpEntity<String> formEntity = new HttpEntity<String>(jsonObj.toString(), headers);

    String result = restTemplate.postForObject(url, formEntity, String.class);

    return result;

    }  

    

    public static void main(String[] args) throws ParseException, IOException {  

        String url="http://php.weather.sina.com.cn/iframe/index/w_cl.php";  

        Map<String, Object> map = new HashMap<String, Object>();  

        map.put("code", "js");  

        map.put("day", "0");  

        map.put("city", "上海");  

        map.put("dfc", "1");  

        map.put("charset", "utf-8");  

        String body = send(url, map,"utf-8");  

        System.out.println("交易响应结果：");  

        System.out.println(body);  

  

        System.out.println("-----------------------------------");  

  

        map.put("city", "北京");  

        body = send(url, map, "utf-8");  

        System.out.println("交易响应结果：");  

        System.out.println(body);  

    }

}

请求结果如下：

log4j:WARN No appenders could be found for logger (org.springframework.web.client.RestTemplate).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

交易响应结果：

(function(){var w=[];w['¼ª°²']=[{s1:'ÕóÓê',s2:'ÕóÓê',f1:'zhenyu',f2:'zhenyu',t1:'28',t2:'23',p1:'¡Ü3',p2:'¡Ü3',d1:'ÄÏ·ç',d2:'ÄÏ·ç'}];var add={now:'2017-06-19 22:17:11',time:'1497881831',update:'±±¾©Ê±¼ä06ÔÂ18ÈÕ08:10¸üÐÂ',error:'0',total:'1'};window.SWther={w:w,add:add};})();//0

-----------------------------------

交易响应结果：

(function(){var w=[];w['¼ª°²']=[{s1:'ÕóÓê',s2:'ÕóÓê',f1:'zhenyu',f2:'zhenyu',t1:'28',t2:'23',p1:'¡Ü3',p2:'¡Ü3',d1:'ÄÏ·ç',d2:'ÄÏ·ç'}];var add={now:'2017-06-19 22:17:12',time:'1497881832',update:'±±¾©Ê±¼ä06ÔÂ18ÈÕ08:10¸üÐÂ',error:'0',total:'1'};window.SWther={w:w,add:add};})();//0

解决办法：

1：修改spring源码，将编码改为gbk； ----   是一个方法，感觉不太好

2：拷贝spring中的StringHttpMessageConverter类源码，做为一个单独的类，修改编码



package com.spring.rest;

/*

 * Copyright 2002-2010 the original author or authors.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.UnsupportedEncodingException;

import java.nio.charset.Charset;

import java.util.ArrayList;

import java.util.List;

import org.springframework.http.HttpInputMessage;

import org.springframework.http.HttpOutputMessage;

import org.springframework.http.MediaType;

import org.springframework.http.converter.AbstractHttpMessageConverter;

import org.springframework.util.FileCopyUtils;

/**

 * Implementation of {@link HttpMessageConverter} that can read and write strings.

 *

 * <p>By default, this converter supports all media types (<code>*/*</code>), and writes with a {@code

 * Content-Type} of {@code text/plain}. This can be overridden by setting the {@link

 * #setSupportedMediaTypes(java.util.List) supportedMediaTypes} property.

 *

 * @author Arjen Poutsma

 * @since 3.0

 */

public class StringHttpMessageConverter extends AbstractHttpMessageConverter<String> {

public static final Charset DEFAULT_CHARSET = Charset.forName("gbk");

private final List<Charset> availableCharsets;

private boolean writeAcceptCharset = true;

public StringHttpMessageConverter() {
super(new MediaType("text", "plain", DEFAULT_CHARSET), MediaType.ALL);
this.availableCharsets = new ArrayList<Charset>(Charset.availableCharsets().values());
}

/**
* Indicates whether the {@code Accept-Charset} should be written to any outgoing request.
* <p>Default is {@code true}.
*/
public void setWriteAcceptCharset(boolean writeAcceptCharset) {
this.writeAcceptCharset = writeAcceptCharset;
}

@Override
public boolean supports(Class<?> clazz) {
return String.class.equals(clazz);
}

@Override
protected String readInternal(Class clazz, HttpInputMessage inputMessage) throws IOException {
MediaType contentType = inputMessage.getHeaders().getContentType();
Charset charset = contentType.getCharSet() != null ? contentType.getCharSet() : DEFAULT_CHARSET;
return FileCopyUtils.copyToString(new InputStreamReader(inputMessage.getBody(), charset));
}

@Override
protected Long getContentLength(String s, MediaType contentType) {
if (contentType != null && contentType.getCharSet() != null) {
Charset charset = contentType.getCharSet();
try {
return (long) s.getBytes(charset.name()).length;
}
catch (UnsupportedEncodingException ex) {
// should not occur
throw new InternalError(ex.getMessage());
}
}
else {
return null;
}
}

@Override
protected void writeInternal(String s, HttpOutputMessage outputMessage) throws IOException {
if (writeAcceptCharset) {
outputMessage.getHeaders().setAcceptCharset(getAcceptedCharsets());
}
MediaType contentType = outputMessage.getHeaders().getContentType();
Charset charset = contentType.getCharSet() != null ? contentType.getCharSet() : DEFAULT_CHARSET;
FileCopyUtils.copy(s, new OutputStreamWriter(outputMessage.getBody(), charset));
}

/**
* Return the list of supported {@link Charset}.
*
* <p>By default, returns {@link Charset#availableCharsets()}. Can be overridden in subclasses.
*
* @return the list of accepted charsets
*/
protected List<Charset> getAcceptedCharsets() {
return this.availableCharsets;
}

}

package com.spring.rest;

import java.io.IOException;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import ognl.ParseException;

import org.springframework.http.HttpEntity;

import org.springframework.http.HttpHeaders;

import org.springframework.http.MediaType;

import org.springframework.http.converter.HttpMessageConverter;

import org.springframework.web.client.RestTemplate;

import com.alibaba.fastjson.JSONObject;

public class RestTempLateClient {
/** 

     * 模拟请求 

     *  

     * @param url       资源地址 

     * @param map   参数列表 

     * @param encoding  编码 

     * @return 

     * @throws ParseException 

     * @throws IOException 

     */  

    public static String send(String url, Map<String,Object> map,String encoding) {  

    RestTemplate restTemplate = new RestTemplate();

    //3.1.X以上版本使用

    //restTemplate.getMessageConverters().add(0, StringHttpMessageConverter.DEFAULT_CHARSET);

   

    List<HttpMessageConverter<?>> converterList=restTemplate.getMessageConverters();

    HttpMessageConverter<?> converter = new StringHttpMessageConverter();

    converterList.add(0, converter);

    restTemplate.setMessageConverters(converterList);

    HttpHeaders headers = new HttpHeaders();

    MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");

    headers.setContentType(type);

    headers.add("Accept", MediaType.APPLICATION_JSON.toString());

    //map 转换为json对象

    JSONObject jsonObj = new JSONObject(map);

    HttpEntity<String> formEntity = new HttpEntity<String>(jsonObj.toString(), headers);

    String result = restTemplate.postForObject(url, formEntity, String.class);

    return result;

    }  

    

    public static void main(String[] args) throws ParseException, IOException {  

        String url="http://php.weather.sina.com.cn/iframe/index/w_cl.php";  

        Map<String, Object> map = new HashMap<String, Object>();  

        map.put("code", "js");  

        map.put("day", "0");  

        map.put("city", "上海");  

        map.put("dfc", "1");  

        map.put("charset", "utf-8");  

        String body = send(url, map,"utf-8");  

        System.out.println("交易响应结果：");  

        System.out.println(body);  

  

        System.out.println("-----------------------------------");  

  

        map.put("city", "北京");  

        body = send(url, map, "utf-8");  

        System.out.println("交易响应结果：");  

        System.out.println(body);  

    }

}

响应结果：

log4j:WARN No appenders could be found for logger (org.springframework.web.client.RestTemplate).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

交易响应结果：

(function(){var w=[];w['深圳']=[{s1:'大雨',s2:'中到大雨',f1:'dayu',f2:'zhongyu',t1:'30',t2:'26',p1:'≤3',p2:'≤3',d1:'无持续风向',d2:'无持续风向'}];var add={now:'2017-06-19 22:18:49',time:'1497881929',update:'北京时间06月18日08:10更新',error:'0',total:'1'};window.SWther={w:w,add:add};})();//0

-----------------------------------

交易响应结果：

(function(){var w=[];w['深圳']=[{s1:'大雨',s2:'中到大雨',f1:'dayu',f2:'zhongyu',t1:'30',t2:'26',p1:'≤3',p2:'≤3',d1:'无持续风向',d2:'无持续风向'}];var add={now:'2017-06-19 22:18:50',time:'1497881930',update:'北京时间06月18日08:10更新',error:'0',total:'1'};window.SWther={w:w,add:add};})();//0