struts2直接返回字符串

来源：互联网发布：ipad调色软件编辑：程序博客网时间：2024/06/15 01:33

用struts2一直很舒服.就是缺少一个方便的返回字符串的方法.今天终于耐着性子看了看.原来不是很难啊..集成个类就可以了..废话不说了.直接看代码吧..

/** * 扩展Struts2返回类型,直接返回String* * @author Carmack Created on 2009-3-24 下午03:36:32*/public class StringResult extends ServletRedirectResult {/** * @author Carmack Created on 2009-3-24 下午03:36:24*/private static final long serialVersionUID = -2800270132418148253L;private static final Logger LOG = LoggerFactory.getLogger(StringResult.class);public StringResult(){super();}public StringResult(String location){super(location);}public void doExecute(String finalLocation, ActionInvocation invocation) throws Exception {HttpServletResponse response = (HttpServletResponse) invocation.getInvocationContext().get(HTTP_RESPONSE);HttpServletRequest request = (HttpServletRequest) invocation.getInvocationContext().get(HTTP_REQUEST); response.setContentType("text/plain; charset=UTF-8"); response.setHeader("Content-Disposition","inline"); PrintWriter writer = null; try {writer = response.getWriter();writer.write(request.getAttribute(finalLocation).toString());} catch(NullPointerException e) {if(finalLocation.equals("")){LOG.warn("未指定value",e);}else{LOG.error("空",e);}} finally { if (writer != null) {writer.flush();writer.close();}}}}

使用也很简单啦. 在Action上写

@Results({ @Result(name ="strResult", type=StringResult.class, value="testStr")})

在方法中先给testStr赋值,返回直接返回sttrResult就OK啦.

testStr ="测试返回字符串123abc";return"strResult";

因为我们的项目都是UTF-8编码的,所以没有做字符编码的处理.有兴趣的朋友自己处理吧.

可以查看org.apache.struts2.dispatcher.PlainTextResult

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