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
1 <filter> 2 <filter-name>characterEncodingFilter</filter-name> 3 <filter-class>training.model.filter.CharacterEncodingFilter</filter-class> 4 <init-param> 5 <param-name>characterEncoding</param-name> 6 <param-value>UTF-8</param-value> 7 </init-param> 8 <init-param> 9 <param-name>enabled</param-name> 10 <param-value>true</param-value> 11 </init-param> 12 </filter> 13 <filter-mapping> 14 <filter-name>characterEncodingFilter</filter-name> 15 <url-pattern>/*</url-pattern> 16 </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。
