十二、Struts2通过拦截器处理中文请求参数乱码的问题

编写拦截器

package blog.csdn.net.mchenys.intercept;

import java.io.UnsupportedEncodingException;
import java.util.Iterator;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;
import org.apache.struts2.StrutsStatics;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
/**
 * 解决请求乱码问题
 * @author mChenys
 *
 */
public class EncodingIntereptor extends AbstractInterceptor {

	private static final long serialVersionUID = 6826256332417695666L;

	@Override
	public String intercept(ActionInvocation invo) throws Exception {
		HttpServletRequest request = ServletActionContext.getRequest();
		HttpServletResponse response = ServletActionContext.getResponse();
		if (request.getMethod().equalsIgnoreCase("post")) {
			try {
				request.setCharacterEncoding("utf-8");
			} catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			}
		} else {
			Iterator<String[]> iterval = request.getParameterMap().values().iterator();
			while (iterval.hasNext()) {
				String[] parames = iterval.next();
				for (int i = 0; i < parames.length; i++) {
					try {
						parames[i] = new String(parames[i].getBytes("iso8859-1"), "utf-8");
					} catch (UnsupportedEncodingException e) {
						e.printStackTrace();
					}
				}
			}
		}
		response.setContentType("text/html;charset=UTF-8");
		response.setHeader("Cache-Control", "no-cache");
		return invo.invoke();
	}

}

编辑struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
	
	<package name="test" extends="json-default,struts-default" namespace="/test">
		
		<!-- 配置拦截器 -->
		<interceptors>
			<interceptor name="encoding" class="blog.youkuaiyun.com.mchenys.intercept.EncodingIntereptor"></interceptor>
			<!-- 定义拦截器栈 -->
			<interceptor-stack name="myStack">
				<!-- 引入自定义的拦截器 -->
				<interceptor-ref name="encoding"/>
				<!-- 引入默认的拦截器 -->
				<interceptor-ref name="defaultStack"/>
			</interceptor-stack>
		</interceptors>
			
		<action name="*" class="blog.youkuaiyun.com.mchenys.action.TestAction" method="{1}">
			<!-- 引入拦截器栈 -->
			<interceptor-ref name="myStack"/>
			
			<!-- <result name="jump" type="chain">demo2</result> -->
			
			<result type="json">
				<param name="root">dataMap</param>
				<!-- 是否去掉返回值为NULL的properties -->
				<param name="excludeNullProperties">true</param>
			</result>
		</action>
	</package>

	

</struts>

搞定~~