Question

我正在尝试使用eclipse中的maven和Apache Tomcat制作RESTFUL JAVA WEB服务。对我来说似乎一切都很好，并没有显示任何错误，但是当打开它显示404 Error的URL时。

我试图通过此网址http://localhost:8080/first/rest调用它
WEB.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>first</display-name>
    <servlet>
        <servlet-name>firstapp</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>com.first.pkg</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>firstapp</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

的的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>task</groupId>
  <artifactId>first</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>first Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <repositories>
        <repository>
            <id>maven2-repository.java.net</id>
            <name>Java.net Repository for Maven</name>
            <url>http://download.java.net/maven/2/</url>
            <layout>default</layout>
        </repository>
    </repositories>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-server</artifactId>
            <version>1.9</version>
        </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src/main/java</sourceDirectory>
  </build>
</project>

的 RestServ.java

package com.first.pkg;

import java.util.Date;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;

@Path("/")
public class RestServ {

    @GET
    @Produces("text/html")
    public Response getStartingPage()
    {
        String output = "<h1>Hello World!<h1>" +
                "<p>RESTful Service is running ... <br>Ping @ " + new Date().toString() + "</p<br>";
        return Response.status(200).entity(output).build();
    }
}

Answer 1

<display-name>first</display-name>

是一个描述部分，我认为您不能通过此名称调用您的Web服务。相反，尝试将其称为

http://localhost:8080/{nameOfYourWARFileHere}/rest

还要确保在斜杠之后立即将rest放入RestServ.java中的@Path("/")注释中，否则请求映射将不起作用。

Java Restful Web服务404错误

1 个答案: