【100分】请教关于Servlet3.0 + Tomcat7.0.x 异步调用的问题
@WebServlet(urlPatterns="/test",asyncSupported=true)public class ModuleAsyncServlet extends HttpServlet {@Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { response.setCharacterEncoding("UTF-8"); Writer out = response.getWriter();// request.startAsync(); //报异常 AsyncContext ctx = request.getAsyncContext();//null System.out.println(request.isAsyncSupported()); //falsepackage org.async.servlet;import java.io.IOException;import java.io.PrintWriter;import java.io.Writer;import java.util.Date;import javax.servlet.AsyncContext;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@WebServlet(urlPatterns="/test",asyncSupported=true)public class ModuleAsyncServlet extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { response.setCharacterEncoding("UTF-8"); Writer out = response.getWriter(); request.startAsync(); AsyncContext ctx = request.getAsyncContext(); System.out.println(request.isAsyncSupported()); //AsyncContext ctx = request.startAsync(); new Thread(new Executor(ctx)).start(); out.write("结束Servlet的时间：" + new Date() + "."); out.flush(); } catch (Exception e) { e.printStackTrace(); } } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { super.doPost(req, resp); }}class Executor implements Runnable { private AsyncContext ctx = null; public Executor(AsyncContext ctx) { this.ctx = ctx; } public void run() { try { // 等待十秒钟，以模拟业务方法的执行 Thread.sleep(10000); PrintWriter out = ctx.getResponse().getWriter(); out.println("业务处理完毕的时间：" + new Date() + "."); out.flush(); ctx.complete(); } catch (Exception e) { e.printStackTrace(); } }}
希望对你有帮助
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帮忙顶一下，我最近也在搞这个，除了类似问题。楼主要是解决了，别忘也告知我一声……
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= = 。。经过我刚才测试了下``应该和代码无关。。是服务器的问题``tom7我没试。因为我用的tom6.。用jboss测试了你的代码可以通过``没问题
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新jar包没放？
not support？
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