之前使用struts1的时候是通过写filter来处理乱码,把写的filter搬到struts2,配置了WEB.XML发生没有效果,请求根本就没有通过filter。原因Struts2在web.html配置了处理action请求的filter:
- <filter>
- <filter-name>struts2</filter-name>
- <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
- </filter>
- <filter-mapping>
- <filter-name>struts2</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
通过这个sturts filter后,在这个struts filter之前或之后配置都是发现处理乱码的filter不起作用,所以编写拦截器还是个不错的解决乱码的方式。
1、编写自定义 EncodingIntereptor拦截器
- import java.io.UnsupportedEncodingException;
- import java.util.Iterator;
- import javax.servlet.http.HttpServletRequest;
- import org.apache.struts2.StrutsStatics;
- import com.opensymphony.xwork2.ActionContext;
- import com.opensymphony.xwork2.ActionInvocation;
- import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
- public class EncodingInterceptor extends AbstractInterceptor {
- /**
- * Struts2编码拦截器
- */
- @Override
- public String intercept(ActionInvocation arg0) throws Exception {
- // TODO Auto-generated method stub
- ActionContext actionContext = arg0.getInvocationContext();
- HttpServletRequest request= (HttpServletRequest) actionContext.get(StrutsStatics.HTTP_REQUEST);
- System.out.println("Encoding Intercept...");
- /**
- * 此方法体对GET 和 POST方法均可
- */
- if( request.getMethod().compareToIgnoreCase("post")>=0){
- try {
- request.setCharacterEncoding("GBK");
- } catch (UnsupportedEncodingException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }else{
- Iterator iter=request.getParameterMap().values().iterator();
- while(iter.hasNext())
- {
- String[] parames=(String[])iter.next();
- for (int i = 0; i < parames.length; i++) {
- try {
- parames[i]=new String(parames[i].getBytes("iso8859-1"),"GBK");//此处GBK与页面编码一样
- } catch (UnsupportedEncodingException e) {
- e.printStackTrace();
- }
- }
- }
- }
- return arg0.invoke();
- }
- }
2、Struts.xml配置
下注册拦截器:
- <package>
- <interceptors>
- <interceptor name="Encoding" class="com.disaster.util.EncodingInterceptor"></interceptor>
- <interceptor-stack name="Encode">
- <interceptor-ref name="Encoding"></interceptor-ref>
- <interceptor-ref name="defaultStack"></interceptor-ref><!-- 必须引入这个,否则request不会再往下传-->
- </interceptor-stack>
- </interceptors>
3、使用拦截器,可将其设为默认的拦截器
- <default-interceptor-ref name="Encode"></default-interceptor-ref>
4、页面编码和页面字符编码跟设为"UTF-8"。如果页面是其它编码,将拦截器中重编码部分改一下即可。