jsp实现日志排版

<%@ page import="java.io.*" %>
<%@ page import="java.util.*" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>日志排版</title>
    <style>
        .error { color: red; }
        .warn { color: orange; }
        .info { color: green; }
    </style>
</head>
<body>
<h1>系统日志</h1>
<%
    String logFilePath = application.getRealPath("/WEB-INF/logs/app.log");
    List<String> logLines = new ArrayList<>();
    try (BufferedReader reader = new BufferedReader(new FileReader(logFilePath))) {
        String line;
        while ((line = reader.readLine()) != null) {
            logLines.add(line);
        }
    } catch (IOException e) {
        out.println("读取日志文件时发生错误: " + e.getMessage());
    }

    for (String logLine : logLines) {
        if (logLine.contains("[ERROR]")) {
            out.println("<p class='error'>" + logLine + "</p>");
        } else if (logLine.contains("[WARN]")) {
            out.println("<p class='warn'>" + logLine + "</p>");
        } else if (logLine.contains("[INFO]")) {
            out.println("<p class='info'>" + logLine + "</p>");
        } else {
            out.println("<p>" + logLine + "</p>");
        }
    }
%>
</body>
</html>