Spring Boot学习(四)之web开发渲染页面 -- Freemarker-博客-最代码

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低调人 2017-11-08 11:47:07

Spring Boot学习(四)之web开发渲染页面 -- Freemarker

上篇编写了Spring Boot学习(四)之web开发渲染页面 -- Thymeleaf

接下来我们来看一下Freemarker整合springboot

来看controller:

    @RequestMapping("/")
    public String index(ModelMap map) {
        map.addAttribute("name", "筱进GG");
        return "index";
    }

pom.xml引入:

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.3.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-freemarker</artifactId>
		</dependency>

	</dependencies>
	
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<fork>true</fork>
				</configuration>
			</plugin>
		</plugins>
	</build>

编写一个hello.ftl文件，此文件的路径在src/main/resources/templates下，其中hello.ftl文件的内容如下：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8" />
    <title></title>
</head>
<body>
FreeMarker模板引擎
welcome ${name} to freemarker!
</body>
</html>

我们就可以启动我们的程序进行测试了，访问地址：

http://127.0.0.1:8080/hello ，如果你在浏览器中看到如下信息：

FreeMarker模板引擎 welcome 筱进GG to freemarker!

那么说明你的 ok 了。

freemarker配置:

在spring boot的application.properties属性文件中为freemarker提供了一些常用的配置,如下：

spring.freemarker.allow-request-override=false # Set whether HttpServletRequest attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.freemarker.allow-session-override=false # Set whether HttpSession attributes are allowed to override (hide) controller generated model attributes of the same name.
spring.freemarker.cache=false # Enable template caching.
spring.freemarker.charset=UTF-8 # Template encoding.
spring.freemarker.check-template-location=true # Check that the templates location exists.
spring.freemarker.content-type=text/html # Content-Type value.
spring.freemarker.enabled=true # Enable MVC view resolution for this technology.
spring.freemarker.expose-request-attributes=false # Set whether all request attributes should be added to the model prior to merging with the template.
spring.freemarker.expose-session-attributes=false # Set whether all HttpSession attributes should be added to the model prior to merging with the template.
spring.freemarker.expose-spring-macro-helpers=true # Set whether to expose a RequestContext for use by Spring's macro library, under the name "springMacroRequestContext".
spring.freemarker.prefer-file-system-access=true # Prefer file system access for template loading. File system access enables hot detection of template changes.
spring.freemarker.prefix= # Prefix that gets prepended to view names when building a URL.
spring.freemarker.request-context-attribute= # Name of the RequestContext attribute for all views.
spring.freemarker.settings.*= # Well-known FreeMarker keys which will be passed to FreeMarker's Configuration.
spring.freemarker.suffix= # Suffix that gets appended to view names when building a URL.
spring.freemarker.template-loader-path=classpath:/templates/ # Comma-separated list of template paths.
spring.freemarker.view-names= # White list of view names that can be resolved.

参数默认配置,可写可不写

spring.freemarker.allow-request-override=false
spring.freemarker.cache=true
spring.freemarker.check-template-location=true
spring.freemarker.charset=UTF-8
spring.freemarker.content-type=text/html
spring.freemarker.expose-request-attributes=false
spring.freemarker.expose-session-attributes=false
spring.freemarker.expose-spring-macro-helpers=false
#spring.freemarker.prefix=
#spring.freemarker.request-context-attribute=
#spring.freemarker.settings.*=
#spring.freemarker.suffix=.ftl
#spring.freemarker.template-loader-path=classpath:/templates/ #comma-separated list
#spring.freemarker.view-names= # whitelist of view names that can be resolved

修改index方法:

   @RequestMapping("/")
    public String index(ModelMap map) {
        map.addAttribute("name", "筱进GG");
        map.put("gender",1);//gender:性别，1：男；0：女；
        List<Map<String,Object>> friends =new ArrayList<Map<String,Object>>();
        Map<String,Object> friend = new HashMap<String,Object>();
        friend.put("name", "张三");
        friend.put("age", 20);
        friends.add(friend);
        friend = new HashMap<String,Object>();
        friend.put("name", "李四");
        friend.put("age", 22);
        friends.add(friend);
        map.put("friends", friends);
        return "index";
    }

修改页面

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8" />
    <title></title>
</head>
<body>
    FreeMarker模板引擎
    <p>
        welcome ${name}  to freemarker!
    </p>
    <p>性别：
        <#if gender==0>
            女
        <#elseif gender==1>
            男
        <#else>
            保密
        </#if>
    </p>
    <h4>我的好友：</h4>
    <#list friends as item>
        姓名：${item.name} , 年龄${item.age}
    <br>
    </#list>
</body>
</html>

重启运行项目:

http://127.0.0.1:8080/hello可以看到

FreeMarker模板引擎

welcome 筱进GG to freemarker!

性别：男

我的好友：

姓名：张三 , 年龄20
姓名：李四 , 年龄22

至此,freemarker整合springboot就完成了!

源码链接分享:Spring Boot学习(四)之web开发渲染页面 -- Freemarker博客源码分享

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