Servlet异步处理示例

来源：互联网发布：创维32e300e数据编辑：程序博客网时间：2024/05/17 08:37

@WebServlet(urlPattens=”/demo”, asyncSupported = true)
public class AsyncDemoServlet extends HttpServlet {
@Override
public void doGet(HttpServletRequest request, HttpServletRespone response)
throws IOException, ServletException {
respones.setContentType(“text/html; charset=utf-8”);
PrintWriter writer = response.getWriter();
out.println(“进入Servlet时间” + new Date() + “.”);
out.flush();

        //在子线程中执行业务调用，并由其负责输出响应，主线程退出        AsyncContext ctx = request.startAsync();        new Thread(new Executor(ctx)).start();        out.println("结束Servlet的时间：" + new Date() + ".");        out.flush();}

}

public class Executor implements Runnable {
private AsyncContext ctx = null;
publiic Executor(AsyncContext ctx){
this.ctx = ctx;
}

@Overridepublic Void run() {    try {        Thead.sleep(10000);        //用out模拟实际业务        PrintWriter out = ctx.getWriter();        out.println("业务处理完毕的时候：" + new Date() + ".");        out.flush();        ctx.complete();    } catche(Exception ex) {        e.printStackTrace();    }}

}

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