IE中返回application/json弹出下载框问题

js 配合java springMVC后台，成功后返回消息，chrom ff都正常，只有IE提交后返回的JSON弹出下载框
网上一般有三种方法:

• 一：是手工指定response
• 二：是修改配置文件（经过修改，会出现左上角弹出一个连接框）

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="supportedMediaTypes">
                <list>
                    <value>text/html;charset=UTF-8value>
                list>
            property>
        bean>
    mvc:message-converters>
mvc:annotation-driven>

• 三：是不再用 @ResponseBody,改用ResponseEntity

这种方法成功率最高，但是修改起来比较麻烦，如果你有很多地方已经用了@ResponseBody的话
第三种参考下面博客
http://blog.csdn.net/gao36951/article/details/46785323

• 四：修改配置文件，定义一个转化器
  具体配置如下

<mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="com.test.core.Utf8StringHttpMessageConverter" />
        mvc:message-converters>
    mvc:annotation-driven>

Utf8StringHttpMessageConverter源码如下,在writeInternal方法中添加对IE浏览器的判断处理逻辑

if(outputMessage.getHeaders().getContentType().
    getSubtype().equals("x-ms-application")){
    //针对IE的兼容性处理，统一转化为text/plain
    outputMessage.getHeaders().setContentType(MediaType.TEXT_PLAIN);
}

package com.test.core;

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;

public class Utf8StringHttpMessageConverter extends
        AbstractHttpMessageConverter {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private final Charset defaultCharset;

    private final List availableCharsets;

    private boolean writeAcceptCharset = true;

    public Utf8StringHttpMessageConverter() {
        this(DEFAULT_CHARSET);
    }

    public Utf8StringHttpMessageConverter(Charset defaultCharset) {
        super(new MediaType("text", "plain", defaultCharset), MediaType.ALL);
        this.defaultCharset = defaultCharset;
        this.availableCharsets = new ArrayList(Charset
                .availableCharsets().values());
    }

    public void setWriteAcceptCharset(boolean writeAcceptCharset) {
        this.writeAcceptCharset = writeAcceptCharset;
    }

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

    @Override
    protected String readInternal(@SuppressWarnings("rawtypes") Class clazz,
            HttpInputMessage inputMessage) throws IOException {
        Charset charset = getContentTypeCharset(inputMessage.getHeaders()
                .getContentType());
        return FileCopyUtils.copyToString(new InputStreamReader(inputMessage
                .getBody(), charset));
    }

    @Override
    protected Long getContentLength(String s, MediaType contentType) {
        Charset charset = getContentTypeCharset(contentType);
        try {
            return (long) s.getBytes(charset.name()).length;
        } catch (UnsupportedEncodingException ex) {
            throw new IllegalStateException(ex);
        }
    }

    @Override
    protected void writeInternal(String s, HttpOutputMessage outputMessage)
            throws IOException {
        if (this.writeAcceptCharset) {
            outputMessage.getHeaders().setAcceptCharset(getAcceptedCharsets());
            if(outputMessage.getHeaders().getContentType().getSubtype().equals("x-ms-application")){//针对IE的兼容性处理，统一转化为text/plain
                outputMessage.getHeaders().setContentType(MediaType.TEXT_PLAIN);
            }
        }
        Charset charset = getContentTypeCharset(outputMessage.getHeaders()
                .getContentType());
        FileCopyUtils.copy(s, new OutputStreamWriter(outputMessage.getBody(),
                charset));
    }

    protected List getAcceptedCharsets() {
        return this.availableCharsets;
    }

    private Charset getContentTypeCharset(MediaType contentType) {
        if (contentType != null && contentType.getCharSet() != null) {
            return contentType.getCharSet();
        } else {
            return this.defaultCharset;
        }
    }

}

这样就解决了编码问题和IE弹出下载框的问题，如有其他更好的方法欢迎赐教