Spring-boot 使用 Freemarkar

pom.xml

	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>cn.futuremove</groupId>
	<artifactId>mock-tbox</artifactId>
	<version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

	<name>mock-tbox</name>
	<description>Demo project for Spring Boot</description>

	<properties>

		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>
        <scala.version>2.11.12</scala.version>
        <spring-boot.version>2.1.4.RELEASE</spring-boot.version>

        <!-- 开罗 -->
        <platform-bom.version>Cairo-SR5</platform-bom.version>
        <!-- 芬奇利 -->
        <spring-cloud.version>Finchley.SR2</spring-cloud.version>
	</properties>

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

application.yml

server:
  port: 8081
spring:
  application:
    name: mock-tbox
  cloud:
    service-registry:
      auto-registration:
        enabled: false

  freemarker:
    # req访问 request
    request-context-attribute: req
    suffix: .htm
    content-type: text/html
    enabled: true
    cache: false
    # 模板加载路径 按需配置
    template-loader-path:
      - classpath:/templates
    charset: UTF-8
    settings:
      number_format: '0.##'


management:
  endpoints:
    web:
      exposure:
        include: '*'
    enabled-by-default: false
  endpoint:
    beans:
      enabled: true
    configprops:
      enabled: true
    env:
      enabled: true
    health:
      enabled: true
      show-details: always
    mappings:
      enabled: true

模板文件位置

+ resources
| + templates
| - - echo.htm

Controller

package cn.futuremove.mocktbox.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.context.request.async.WebAsyncTask;

import javax.servlet.http.HttpServletRequest;

@Controller
public class EchoController {


    private static final Logger LOGGER = LoggerFactory.getLogger(EchoController.class);

    private static final long TIMEOUT = 5000L;

    @GetMapping(value="/echo")
    public WebAsyncTask<String> echo(HttpServletRequest request) {

        return new WebAsyncTask<>(TIMEOUT, ()->{

            LOGGER.info(" ... ");

            request.setAttribute("name", "程超");
            return "echo";
        });

    }

}

模板文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
嗨：${name}
</body>
</html>

freemarker 的配置（propertity格式配置文件）

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

另外需要使用thymeleaf 可以使用如下配置（yml 格式配置文件方式）

##视图模型
spring:
  thymeleaf:
    prefix: classpath:/templates/
    suffix: .html
    cache: false
    encoding: utf-8
    content-type: text/html
    check-template-location: true