获取java.io.IOException:在getInputStream上写入服务器时出错 [英] Getting java.io.IOException: Error writing to server at getInputStream

问题描述

如果临时字符串很大，我将得到java.io.IOException:在getInputStream上写入服务器时出错

If the temp string is very large I get java.io.IOException: Error writing to server at getInputStream

String tmp  = js.deepSerialize(taskEx);
URL url = new URL("http://"
                    + "localhost"
                    + ":"
                    + "8080"
                    + "/Myproject/TestServletUpdated?command=startTask&taskeId=" +taskId + "'&jsonInput={\"result\":"
                    + URLEncoder.encode(tmp) + "}"); 

                    URLConnection conn = url.openConnection();
                     InputStream is = conn.getInputStream();

那是为什么? 该调用转到URL中提到的servlet.

Why is that? This call goes to the servlet mentioned in the URL.

推荐答案

我认为您的网址可能太长，最大字符数为2000(

I think you might have a "too long url", the maximum number of characters are 2000 (see this SO post for more info). GET requests are not made to handle such long data input.

如果您还可以更改servlet代码，则可以将其更改为POST而不是GET请求(如您现在的要求).客户端代码看起来很像:

You can, if you can change the servlet code also, change it into a POST instead of a GET request (as you have today). The client code would look pretty simular:

public static void main(String[] args) throws IOException {

    URL url = new URL("http", "localhost:8080", "/Myproject/TestServletUpdated");

    URLConnection conn = url.openConnection();
    conn.setDoOutput(true);

    OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
    wr.write("command=startTask" +
             "&taskeId=" +taskId +
             "&jsonInput={\"result\":" + URLEncoder.encode(tmp) + "}");
    wr.flush();


    .... handle the answer ...
}

---

我没有首先看到它，但似乎您的请求字符串中只有一个引号字符.

---

I didn't see it first but it seems like you have a single quote character in your request string.

...sk&taskeId=" + taskId + "'&jso.....
                            ^

尝试删除它，可能会对您有所帮助！

try removing it, it might help you!

这篇关于获取java.io.IOException:在getInputStream上写入服务器时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！