http请求参数中中文乱码问题解决办法

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问题现象：

请求 URL 为：

http://127.0.0.1:9999/micp/queryObjectOut?moduleId=1&json={“hphm”:”H3XX96″,”hpzl”:”02″,”hphm_cn”:“陕“}

后台接收到 json 字符串中 hphm_cn 始终为乱码。

解决办法：

1 首先处理整个项目编码，保持一致。servlet 通过过滤器完成，过滤器代码如下：

package cn.woogo.micp.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
* ClassName: CharacterEncodingFilter
*
* @Description: 处理请求参数乱码问题
*@author Zeus
* @date 2016-5-17
*/
public class CharacterEncodingFilter implements Filter {

protected String encoding = null;

protected FilterConfig filterConfig = null;

protected boolean ignore = true;

@Override
public void destroy() {
this.encoding = null;
this.filterConfig = null;
}

@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)throws IOException, ServletException {
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding= selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
}
chain.doFilter(request, response);
}

@Override
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
// 获取初始化参数
this.encoding = filterConfig.getInitParameter(“encoding”);
String value= filterConfig.getInitParameter(“ignore”);
if (value == null) {
this.ignore = true;
}else if (value.equalsIgnoreCase(“true”)) {
this.ignore = true;
}else if (value.equalsIgnoreCase(“yes”)) {
this.ignore = true;
}else
this.ignore = false;

}

protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}
}

View Code

2 web.xml 文件中配置：

<?xml version=”1.0″ encoding=”UTF-8″?>
<web-appversion=”2.5″ xmlns=”http://java.sun.com/xml/ns/javaee”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xsi:schemaLocation=”http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd”>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<!–编码处理过滤器 –>
<filter>
<filter-name>Character Encoding</filter-name>
<filter-class>cn.woogo.micp.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<!– 制定过滤器映射–>
<filter-mapping>
<filter-name>Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>