struts2 response问题

[yu98041154]

我用
HttpServletResponse response = ServletActionContext.getResponse();
在ACTION里获取response返回的为什么是NULL
是不是还要配置什么东西啊。谢谢！！

[jy02363756]

不需要了！ 直接拿就可以

[zl3450341]

HttpServletResponse response = (HttpServletResponse)ActionContext.getContext().get(ServletActionContext.HTTP_RESPONSE);

[yu98041154]

[Quote=引用 2 楼 zl3450341 的回复:]
HttpServletResponse response = (HttpServletResponse)ActionContext.getContext().get(ServletActionContext.HTTP_RESPONSE);
[/Quote]
我看了源码那个ServletActionContext.getResponse(); 其实就是你写的(HttpServletResponse)ActionContext.getContext().get(ServletActionContext.HTTP_RESPONSE);
但是我还是取不出来啊。返回就是NULL

[viper211]

我的做法是ACTION的父类实现ServletRequestAware, ServletResponseAware,ServletContextAware
其中保存一个
protected HttpServletRequest request;
protected HttpServletResponse response;
protected HttpSession session;
protected ServletContext context;

ACTION中便可以获得

[道光2008]

参考下：
import com.opensymphony.xwork2.ActionSupport;
public class TestAction extends ActionSupport{
public String execute() {
ServletActionContext.getResponse()；}
}

[yu98041154]

package org.goldratio.action;

import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;
import com.opensymphony.webwork.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;

import org.goldratio.DBUtil.DBAccess;
import org.goldratio.Util.RespUtil;
import org.json.JSONException;
import org.json.JSONObject;

public class MyJsonAction extends ActionSupport
{
private String jsonString;
private int totalCount;
private int pageIdx = 0;

public String execute() throws Exception
{
ServletContext servletContext = ServletActionContext.getServletContext();
System.out.println(servletContext);
JSONObject jsp = new JSONObject();
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/html;charset=utf-8");
PrintWriter pw = response.getWriter();

得到的是NULL

[道光2008]

你到底是获取ServletContext 还是response，不说清楚

[yu98041154]

ServletContext servletContext = ServletActionContext.getServletContext();
System.out.println(servletContext);
这个是我随便写的。测试下。

[yu98041154]

这两个应该同时能获取到或者获取不到吧？

[道光2008]

你看看这个吧
http://cppmayi.javaeye.com/blog/493865

[yu98041154]

。。。。。。引错一个类。郁闷！
谢谢。大家