GET乱码以及POST乱码的解决方法

一、GET乱码的解决方法

在tomcat的server.xml文件中修下面的代码片段，在最后添加URIEncoding="UTF-8"，修改后的结果如下

Xml代码 
<Connector port="8080" protocol="HTTP/1.1"   
               connectionTimeout="20000"   
               redirectPort="8443" URIEncoding="UTF-8" /> 

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" URIEncoding="UTF-8" />


二、POST乱码解决方法

自定义字符集过滤器，代码如下

Java代码 
package com.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;  
 
public class CharEncodingFilter implements Filter {  
 
    private String charSet;  
 
    public void init(FilterConfig config) throws ServletException {  
        charSet = config.getInitParameter("encoding");  
        if (charSet == null && charSet.length() < 1) {  
            charSet = "UTF-8";  
        }  
    }  
 
    public void doFilter(ServletRequest request, ServletResponse response,  
            FilterChain filter) throws IOException, ServletException {  
        request.setCharacterEncoding(this.getCharSet());  
        response.setCharacterEncoding(this.getCharSet());  
        filter.doFilter(request, response);  
 
    }  
 
    public void destroy() {  
        this.setCharSet(null);  
    }  
 
    public void setCharSet(String charSet) {  
        this.charSet = charSet;  
    }  
 
    public String getCharSet() {  
        return (this.charSet);  
    }  
 
} 

package com.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;

public class CharEncodingFilter implements Filter {

private String charSet;

public void init(FilterConfig config) throws ServletException {
charSet = config.getInitParameter("encoding");
if (charSet == null && charSet.length() < 1) {
charSet = "UTF-8";
}
}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain filter) throws IOException, ServletException {
request.setCharacterEncoding(this.getCharSet());
response.setCharacterEncoding(this.getCharSet());
filter.doFilter(request, response);

}

public void destroy() {
this.setCharSet(null);
}

public void setCharSet(String charSet) {
this.charSet = charSet;
}

public String getCharSet() {
return (this.charSet);
}

}
web.xml配置

Xml代码 
<filter> 
        <filter-name>CharEncodingFilter</filter-name> 
        <filter-class> 
            com.filter.CharEncodingFilter  
        </filter-class> 
        <init-param> 
            <param-name>encoding</param-name> 
            <param-value>UTF-8</param-value> 
        </init-param> 
    </filter>