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);
}
}
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);
}
}
2 web.xml文件中配置:
<?
xml version="1.0" encoding="UTF-8"
?>
< web-app version ="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 >
</ web-app >
< web-app version ="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 >
</ web-app >
3 tomcat配置
打开tomcat安装路径,e.g. D:\tomcat\apache-tomcat-7.0.64\conf\server.xml,增加URIEncoding。如下:
<Connector port="9999" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" URIEncoding ="UTF-8"/>