Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.错误解决办法

来源：互联网发布：理财网站源码编辑：程序博客网时间：2024/05/23 00:06

由一个Servlet跳转到另一个Servlet，报出的错误：

信息: Error parsing HTTP request header

Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:452)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:667)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:745)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

代码片段如下：

IndexServlet：

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();out.write("当前商品有：<br/>");List<String> list = Products.getAll();for(String s:list){out.write(s);out.write("<a href='/09_Session/servlet/BuyServlet?name="+s+"'>购买</a><br/>");}}

BuyServlet：

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// 获取IndexServlet传过来的商品String name = request.getParameter("name");// 因为传过来的是汉字，所以需要重新编码?//name = new String(name.getBytes("ISO-8859-1"), "UTF-8");// getSession()：没有Session，则创建Session；有Session，则直接获取。HttpSession session = request.getSession();Object obj = session.getAttribute(Constant.My_Car);if (obj != null){   // 如果有购物车，则取出购物车，放商品。List list = (List)obj;list.add(name);}else{// 如果没有购物车，则创建一个购物车List<String> list = new ArrayList<String>();list.add(name);session.setAttribute(Constant.My_Car, list);}response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();out.write("您当前购买商品为：" + name + "<br/>");}

当点击购买时就出错了。

最终解决办法是：

将地址栏的：localhost:8080/09_Session/servlet/IndexServlet

改成：127.0.0.1:8080/09_Session/servlet/IndexServlet

参考资料：http://bbs.csdn.net/topics/390688735

原因未知！

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