Spring MVC POST中文乱码解决方案

POST中文乱码解决方案

以前，我都是自己编写一个filter，来实现编码，代码如下：

 1 public class CharacterEncodingFilter implements Filter {
 2 
 3     private final static Logger log= LoggerFactory.getLogger(CharacterEncodingFilter.class);
 4 
 5     private String characterEncoding; //编码方式配置在web.xml文件中
 6     private boolean enabled;   //是否启用此Filter，配置在web.xml中
 7 
 8     @Override
 9     public void destroy() {
10         characterEncoding = null;
11     }
12 
13     @Override
14     public void doFilter(ServletRequest request, ServletResponse response,
15                          FilterChain chain) throws IOException, ServletException {
16         if (enabled || characterEncoding != null) {
17             request.setCharacterEncoding(characterEncoding);
18             response.setCharacterEncoding(characterEncoding);
19         }
20         chain.doFilter(request, response);
21     }
22 
23     @Override
24     public void init(FilterConfig config) throws ServletException {
25         characterEncoding = config.getInitParameter("characterEncoding");
26         enabled = "true".equalsIgnoreCase(config.getInitParameter("enabled").trim());
27     }
28 }

然后自己在web.xml文件中做如下配置

 <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>training.model.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>characterEncoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>enabled</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

其实我们可以不必这么麻烦，重复造轮子。

spring Web MVC框架提供了org.springframework.web.filter.CharacterEncodingFilter用于解决POST方式造成的中文乱码问题，具体配置如下：

 1 <filter>  
 2     <filter-name>CharacterEncodingFilter</filter-name>  
 3     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
 4     <init-param>  
 5         <param-name>encoding</param-name>  
 6         <param-value>utf-8</param-value>  
 7     </init-param>  
 8 </filter>  
 9 <filter-mapping>  
10     <filter-name>CharacterEncodingFilter</filter-name>  
11     <url-pattern>/*</url-pattern>  
12 </filter-mapping>  

　　以后我们项目及所有页面的编码均为UTF-8。