我不明白Spring如何将视图映射到文件(例如“主页”视图到“Home.jsp”)。在Websphere上,您可以在XML文件中找到它。在Spring上,我看到您将端点映射到Java类中的控制器上的视图,但我实际上无法找到如何选择将特定视图映射到特定文件。
谢谢
编辑1: 似乎我的第一个问题是没有启用JSP支持。这是我的 Pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework</groupId>
<artifactId>gs-serving-web-content</artifactId>
<version>0.1.0</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
如果我添加:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
然后我的 pom.xml :
出现错误The managed version is 8.5.27 The artifact is managed in org.springframework.boot:spring-boot-dependencies:1.5.10.RELEASE
报告的文件是 org.springframework.boot:spring-boot-dependencies:1.5.10.RELEASE.pom ,行报告为:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
编辑2:
请考虑一下,即使我设置了spring.mvc.view.suffix:.html,当我尝试访问http://localhost:8080/greeting时收到错误500。这是我的控制台错误:
2018-03-11 21:24:40.923 ERROR 4892 --- [nio-8080-exec-5] org.thymeleaf.TemplateEngine : [THYMELEAF][http-nio-8080-exec-5] Exception processing template "greeting": Error resolving template "greeting", template might not exist or might not be accessible by any of the configured Template Resolvers
2018-03-11 21:24:40.924 ERROR 4892 --- [nio-8080-exec-5] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template "greeting", template might not exist or might not be accessible by any of the configured Template Resolvers] with root cause
org.thymeleaf.exceptions.TemplateInputException: Error resolving template "greeting", template might not exist or might not be accessible by any of the configured Template Resolvers
答案 0 :(得分:0)
如果您希望Spring查找您的视图文件,您需要向Spring ViewResolver
提供两件事:
前缀 - 所有搜索开始的文件夹的路径
后缀 - 扩展您的观点。
您可以通过xml:
执行此操作<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
通过 application.properties :
spring.mvc.view.prefix: /WEB-INF/pages/
spring.mvc.view.suffix: .jsp
通过Java Config:
@Bean
public ViewResolver getViewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/pages/");
resolver.setSuffix(".jsp");
return resolver;
}
因此,如果你有文件 /WEB-INF/jsp/home.jsp ,Spring可以找到只有hello
字符串的文件。
如果您在不同的文件夹中有两个 hello.jsp ,则它不会成为问题,因为您需要明确告知您的视图所在的文件夹(例如,您将指定{ {1}}或return "/foo/hello"
)