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我正在开发简单的网络应用程序。我在 Eclipse Mars 中创建了 Dynamic Web Project，我使用的是 Java 1.8 和 Tomcat v8.0.36。 我创建了一个简单的表单:
<!DOCTYPE html>
<html>
<head>
<title>Coffee Advice Page</title>
</head>
<body>
<form action=”SelectCoffee.do”>
Select Coffee characteristics<p>
Color:
<select name=”color” size=”1”>
<option value=”light”> light </option>
<option value=”amber”> amber </option>
<option value=”brown”> brown </option>
<option value=”dark”> dark </option>
</select>
</br></br>
<input type="submit" value="Submit">
</form>
</body>
</html>
一个小服务程序:
package com.example.web;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@SuppressWarnings("serial")
public class CoffeeSelectionServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println("Inside doGet()");
PrintWriter printWriter = response.getWriter();
printWriter.println("doGet() is working fine!");
}
}
网络.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>CoffeeAdvice</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<!-- <welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file> -->
</welcome-file-list>
<servlet>
<servlet-name>Servlet1</servlet-name>
<servlet-class>com.example.web.CoffeeSelectionServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/SelectCoffee.do</url-pattern>
</servlet-mapping>
</web-app>
但是当我启动 Tomcat 服务器并提交此表单时，我收到带有查询字符串的 404 错误: http://localhost:8080/CoffeeAdvice/%C3%A2%E2%82%AC%C2%9DSelectCoffee.do%C3%A2%E2%82%AC%C2%9D?%E2%80%9Dcolor%E2%80%9D=%E2%80%9Dlight%E2%80%9D
这不是我想要的。 如果我直接从浏览器栏发出 GET 请求:
http://localhost:8080/CoffeeAdvice/SelectCoffee.do?color=light
它工作得很好!
请告诉我为什么生成的查询字符串会像这样扭曲以及我必须更改的内容。
如有任何帮助，我们将不胜感激!