


How to solve the status=parsererror error reported during Ajax interaction
This time I will show you how to solve the status=parsererror error reported during Ajax interaction. What are the precautions to solve the status=parsererror error reported during Ajax interaction. The following is a practical case. Let’s take a look. .
Cause: The data returned by the servlet is not in Json format
1. The JS code is:
var jsonStr = {'clusterNum':2,'iterationNum':3,'runTimes':4}; $.ajax({ type: "post", //http://172.22.12.135:9000/Json.json url: "/LSHome/LSHome", dataType : 'json', data : jsonStr, success: function(data,textStatus){ if(textStatus=="success"){ alert("创建任务操作成功"+data); } }, error: function(xhr,status,errMsg){ alert("创建任务操作失败!"); } });
2. Note that the above url is /LSHome/LSHome, (the project name is LSHome), so in the web.xml file, configure the Servlet as follows:
<servlet> <servlet-name>LSHomeServlet</servlet-name> <servlet-class>com.ys.servlet.LSHomeServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>LSHomeServlet</servlet-name> <url-pattern>/LSHome</url-pattern>
3. The code in the Servlet is:
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //聚类数量 String clusterNum = request.getParameter("clusterNum"); //迭代次数 String iterationNum = request.getParameter("iterationNum"); //运行次数 String runTimes = request.getParameter("runTimes"); System.out.println("聚类数量为:"+clusterNum+"---迭代次数:"+iterationNum+"---运行次数:"+runTimes); PrintWriter out = response.getWriter(); out.write("success"); out.close(); }
4. The result is always an error entering the ajax method, and status=parsererror
xhr = Object {readyState: 4, responseText: "success", status: 200, statusText: "OK"}
5. Solution:
The reason is that the data format returned through the response object is incorrect. The correct method
PrintWriter out = response.getWriter(); String jsonStr = "{\"success\":\"OK\"}"; out.write(jsonStr);
can piece together the return value into JSON data format , and then will it report status=parsererror
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!
Recommended reading:
How to use ajax to realize pop-up login
##Ajax+bootstrap steps to optimize web user experience
The above is the detailed content of How to solve the status=parsererror error reported during Ajax interaction. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Title: Methods and code examples to resolve 403 errors in jQuery AJAX requests. The 403 error refers to a request that the server prohibits access to a resource. This error usually occurs because the request lacks permissions or is rejected by the server. When making jQueryAJAX requests, you sometimes encounter this situation. This article will introduce how to solve this problem and provide code examples. Solution: Check permissions: First ensure that the requested URL address is correct and verify that you have sufficient permissions to access the resource.

jQuery is a popular JavaScript library used to simplify client-side development. AJAX is a technology that sends asynchronous requests and interacts with the server without reloading the entire web page. However, when using jQuery to make AJAX requests, you sometimes encounter 403 errors. 403 errors are usually server-denied access errors, possibly due to security policy or permission issues. In this article, we will discuss how to resolve jQueryAJAX request encountering 403 error

Build an autocomplete suggestion engine using PHP and Ajax: Server-side script: handles Ajax requests and returns suggestions (autocomplete.php). Client script: Send Ajax request and display suggestions (autocomplete.js). Practical case: Include script in HTML page and specify search-input element identifier.

How to solve the problem of jQueryAJAX error 403? When developing web applications, jQuery is often used to send asynchronous requests. However, sometimes you may encounter error code 403 when using jQueryAJAX, indicating that access is forbidden by the server. This is usually caused by server-side security settings, but there are ways to work around it. This article will introduce how to solve the problem of jQueryAJAX error 403 and provide specific code examples. 1. to make

Using Ajax to obtain variables from PHP methods is a common scenario in web development. Through Ajax, the page can be dynamically obtained without refreshing the data. In this article, we will introduce how to use Ajax to get variables from PHP methods, and provide specific code examples. First, we need to write a PHP file to handle the Ajax request and return the required variables. Here is sample code for a simple PHP file getData.php:

Solutions to parsererror errors: 1. Check for syntax errors; 2. Error messages and stack traces; 3. Check the data source; 4. Update the parser or library; 5. Customize the parsing logic; 6. Ask for help. Detailed introduction: 1. Check for syntax errors. If code or data format is being parsed, ensure that the input data conforms to the expected syntax and format; 2. Error message and stack trace. "ParserError" will be accompanied by error message and stack trace. This information can Provide clues as to where and why the error occurred, and more.

Ajax (Asynchronous JavaScript and XML) allows adding dynamic content without reloading the page. Using PHP and Ajax, you can dynamically load a product list: HTML creates a page with a container element, and the Ajax request adds the data to that element after loading it. JavaScript uses Ajax to send a request to the server through XMLHttpRequest to obtain product data in JSON format from the server. PHP uses MySQL to query product data from the database and encode it into JSON format. JavaScript parses the JSON data and displays it in the page container. Clicking the button triggers an Ajax request to load the product list.

Solutions to parsererror errors: 1. Check input data; 2. Update or upgrade the parser; 3. Customize parsing logic; 4. View error messages and stack traces; 5. Use appropriate error handling; 6. Check for encoding issues; 7. Ask for help. Detailed introduction: 1. Check the input data to determine whether the input data conforms to the expected format or structure; 2. Update or upgrade the parser. "ParserError" may be caused by an outdated version of the parser or a known bug. ;3. Customized parsing logic, etc.
