Java 为什么spring/mvc项目会寻找jsp页面来显示输出？

我创建了一个应用程序，从中查看示例。我为Greetings.java和GreetingController.java放置了完全相同的代码。当我运行代码时，它正在寻找一个JSP页面。但是根据这个例子，不需要jsp页面吗？为什么我会犯这个错误？我在Intellij14.0中创建了一个带有应用服务器选项的SpringMVC项目。下图显示了我在IntelliJ中选择的项目类型。请告诉我如何克服这个错误

下面是我的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>com.springapp</groupId>
<artifactId>FirstSpringApp</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>FirstSpringApp</name>

<properties>
    <spring.version>4.1.1.RELEASE</spring.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <finalName>FirstSpringApp</finalName>
    <plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <includes>
                    <include>**/*Tests.java</include>
                </includes>
            </configuration>
        </plugin>
    </plugins>
</build>

下面是我的代码GreetingController.java

@RestController
public class GreetingController {

private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();

@RequestMapping("/greeting")
public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {



    return new Greeting(counter.incrementAndGet(),
            String.format(template, name));
}
}

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如果您使用过视图解析器？请确保您的解析器bean的后缀属性是什么？我用pom.xml编辑了这个问题。我对这些都不熟悉。请帮助分享你的web.xml和配置xml文件。我也添加了…@jbnize如果我发布代码，你能回答吗？

public class Greeting {

private final long id;
private final String content;

public Greeting(long id, String content) {
    this.id = id;
    this.content = content;
}

public long getId() {
    return id;
}

public String getContent() {
    return content;
}
}

@RestController
public class GreetingController {

private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();

@RequestMapping("/greeting")
public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {



    return new Greeting(counter.incrementAndGet(),
            String.format(template, name));
}
}