如何使用ajax请求逐行读取文件，而文件是由其他程序使用java编写的？ [英] How to read from file line by line using ajax request while file is written by other program using java?
问题描述
在我的项目中，
1）我已经使用logback添加了logger。记录器在运行项目时写入文件。
In my project, 1) I have added logger using logback. The logger writes in a file while running a project.
2）我想在记录器写入文件时读取该文件，并在html / jsp上显示它的输出页面。
2) I want to read this file while it is being written by logger and display output of it on html/jsp page.
3）要读取文件，我想从html / jsp页面发送ajax请求，并逐行显示输出。即读取一行并在html页面上显示。
3) To read file I want to send an ajax request from html/jsp page and display output as line by line. i.e. read one line and display it on html page.
这是我做的-----
Here is what I did-----
//To read file
try {
// FileReader reads text files in the default encoding.
FileReader fileReader =
new FileReader(fileName);
// Always wrap FileReader in BufferedReader.
BufferedReader bufferedReader =
new BufferedReader(fileReader);
while((line = bufferedReader.readLine()) != null) {
System.out.println(line);
out.println(line);
}
bufferedReader.close();
}
catch(FileNotFoundException ex) {
System.out.println(
"Unable to open file '" +
fileName + "'");
}
catch(IOException ex) {
System.out.println(
"Error reading file '"
+ fileName + "'");
// ex.printStackTrace();
}
我的html页面是
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"> </script>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function funReadFile(){
//alert("ok");
$.ajax({
type:"GET",
// contentType: "text/plain; charset=utf-8",
url: '/manageCollector/readFile',
success : function (response){
$("#myResponse3out").html(response);
},
error: function(jqXHR, textStatus, errorThrown) {
alert('error ' + textStatus + " " + errorThrown);
}
});
}
</script>
</head>
<body onload = "funReadFile()">
<textarea name="textarea" id="myResponse3out" rows="27" cols="70" ></textarea>
<h2>Test</h2>
</body>
</html>
如何逐行读取文件并显示？
How do I Read file line by line and display it??
推荐答案
您可以使用JQuery动画逐行显示常量..
You can play with JQuery animation to display constants line by line..
$("#animate").click(function() {
$("#content")
.animate({"height": "100px"}, {"queue": false, "duration": 500})
.animate({"width": "250px"}, 500);
});
或者您可以使用互联网上提供的Jquery日志查看器库..参考这个 link
or you can use Jquery Log Viewer libraries available on internet.. refer this link
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