一、项目目录结构 二、创建MVN项目 freemaker支持比较简单，只需在pom.xml加上： dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-freemarker/artifactId/dependency jsp支持除了加上：
一、项目目录结构
二、创建MVN项目
freemaker支持比较简单，只需在pom.xml加上：
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency>
jsp支持除了加上：
<!-- servlet 依赖. --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- tomcat 的支持. --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency>
还需在配置文件中设置spring.mvc.view,具体见(三)的application.yml。
详细的pom.xml如下：
<?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>com.example</groupId> <artifactId>springboot</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springboot</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.0</version> </dependency> <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> <!-- servlet 依赖. --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- tomcat 的支持. --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
三、application.yml
spring:
datasource:
url : jdbc:mysql://localhost:3306/test?useSSL=false
username : your-user
password : your-passwd
driver-class-name : com.mysql.jdbc.Driver
test2ds:
url : jdbc:mysql://localhost:3306/test2?useSSL=false
username : your-user
password : your-passwd
driver-class-name : com.mysql.jdbc.Driver
mvc:
view:
prefix: /WEB-INF/jsp/
suffix: .jsp
# 自定义属性，可以在Controller中读取
hello: Hello Angel From application
myProps: #自定义的属性和值
simpleProp: simplePropValue
arrayProps: 1,2,3,4,5
listProp1:
- name: abc
value: abcValue
- name: efg
value: efgValue
listProp2:
- config2Value1
- config2Vavlue2
mapProps:
key1: value1
key2: value2
其中数据源本例没有用到。spring.mvc.view是为了实现jsp配置。spring.hello和myProps为自定义属性，在接下去的Controller中使用。
四、视图层
jsp页面在src/main/webapp/WEB-INF/jsp下面。
helloJsp.jsp
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>在此处插入标题</title>
</head>
<body>
helloJsp
<br>
${hello}
</body>
</html>
freemaker在src/main/resources/templates下面
web.ftl
<!DOCTYPE html>
<html lang="zh">
<body>
Date: ${time?date}
<br>
时间: ${time?time}
<br>
Message: ${message}
<br>
simpleProp: ${simpleProp}
</body>
</html>
now.ftl
<!DOCTYPE html>
<html lang="zh">
<body>
时间: ${mynow}
<br>
</body>
</html>
error.ftl
<!DOCTYPE html>
<html lang="en">
<body>
Something wrong: ${status} ${error}
</body>
</html>
五、两个控制类
HelloController调用jsp页面
package com.example.jsp.controller;
import java.util.Map;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloController {
//从spring中读取配置，如取不到默认值为hello jack
@Value("${spring.hello:hello jack}")
private String hello;
@RequestMapping("/helloJsp")
public String helloJsp(Map<String, Object> map){
System.out.println("HelloController.helloJsp().hello="+hello);
map.put("hello", hello);
return "helloJsp";
}
}
FtlWebContrpller需要一个读取myProps属性的辅助类MyProps
package com.example.freemarker.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix="myProps") //接收application.yml中的myProps下面的属性
public class MyProps {
private String simpleProp;
private String[] arrayProps;
private List<Map<String, String>> listProp1 = new ArrayList<Map<String, String>>(); //接收prop1里面的属性值
private List<String> listProp2 = new ArrayList<String>(); //接收prop2里面的属性值
private Map<String, String> mapProps = new HashMap<String, String>(); //接收prop1里面的属性值
public String getSimpleProp() {
return simpleProp;
}
//String类型的一定需要setter来接收属性值；maps, collections, 和 arrays 不需要
public void setSimpleProp(String simpleProp) {
this.simpleProp = simpleProp;
}
public List<Map<String, String>> getListProp1() {
return listProp1;
}
public List<String> getListProp2() {
return listProp2;
}
public String[] getArrayProps() {
return arrayProps;
}
public void setArrayProps(String[] arrayProps) {
this.arrayProps = arrayProps;
}
public Map<String, String> getMapProps() {
return mapProps;
}
public void setMapProps(Map<String, String> mapProps) {
this.mapProps = mapProps;
}
}
FtlWebContrpller代码
package com.example.freemarker.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.Date;
import java.util.Map;
/**
* Created by LK on 2016/5/7.
*/
@Controller
public class FtlWebContrpller {
@Value("${application.message:1234556677}")
private String message = "hi,hello world......";
@Autowired
private MyProps myProps;
@RequestMapping("/")
public String web(Map<String,Object> model){
model.put("time",new Date());
model.put("message",this.message);
model.put("simpleProp",this.myProps.getSimpleProp());
return "web";//返回的内容就是templetes下面文件的名称
}
@RequestMapping("/now")
String now(Map<String,Object> model) {
model.put("mynow",(new Date()).toString());
return "now";//返回的内容就是templetes下面文件的名称
}
}
六、主类
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
@SpringBootApplication
public class SpringbootTestApp implements EmbeddedServletContainerCustomizer{
public static void main(String[] args) {
SpringApplication.run(SpringbootTestApp.class, args);
}
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
// TODO 自动生成的方法存根
container.setPort(8080);
}
}
运行：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.8.RELEASE)
2017-11-02 22:54:51.384 INFO 17207 --- [ main] com.example.SpringbootTestApp : Starting SpringbootTestApp on mymotif-Vostro-14-5480 with PID 17207 (/home/mymotif/workspace/springboot/target/classes started by mymotif in /home/mymotif/workspace/springboot)
2017-11-02 22:54:51.388 INFO 17207 --- [ main] com.example.SpringbootTestApp : No active profile set, falling back to default profiles: default
2017-11-02 22:54:51.490 INFO 17207 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@353d0772: startup date [Thu Nov 02 22:54:51 CST 2017]; root of context hierarchy
2017-11-02 22:54:52.167 WARN 17207 --- [ main] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.example]' package. Please check your configuration.
2017-11-02 22:54:53.535 INFO 17207 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-11-02 22:54:53.553 INFO 17207 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2017-11-02 22:54:53.555 INFO 17207 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.23
2017-11-02 22:54:53.876 INFO 17207 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2017-11-02 22:54:53.882 INFO 17207 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-11-02 22:54:53.882 INFO 17207 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2396 ms
2017-11-02 22:54:54.055 INFO 17207 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-11-02 22:54:54.060 INFO 17207 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-11-02 22:54:54.061 INFO 17207 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-11-02 22:54:54.061 INFO 17207 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-11-02 22:54:54.062 INFO 17207 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-11-02 22:54:54.462 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@353d0772: startup date [Thu Nov 02 22:54:51 CST 2017]; root of context hierarchy
2017-11-02 22:54:54.578 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/now]}" onto java.lang.String com.example.freemarker.controller.FtlWebContrpller.now(java.util.Map<java.lang.String, java.lang.Object>)
2017-11-02 22:54:54.580 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public java.lang.String com.example.freemarker.controller.FtlWebContrpller.web(java.util.Map<java.lang.String, java.lang.Object>)
2017-11-02 22:54:54.581 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/helloJsp]}" onto public java.lang.String com.example.jsp.controller.HelloController.helloJsp(java.util.Map<java.lang.String, java.lang.Object>)
2017-11-02 22:54:54.591 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-11-02 22:54:54.592 INFO 17207 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-11-02 22:54:54.660 INFO 17207 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-02 22:54:54.661 INFO 17207 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-02 22:54:54.729 INFO 17207 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-11-02 22:54:55.409 INFO 17207 --- [ main] o.s.w.s.v.f.FreeMarkerConfigurer : ClassTemplateLoader for Spring macros added to FreeMarker configuration
2017-11-02 22:54:55.674 INFO 17207 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2017-11-02 22:54:55.752 INFO 17207 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-11-02 22:54:55.760 INFO 17207 --- [ main] com.example.SpringbootTestApp : Started SpringbootTestApp in 4.898 seconds (JVM running for 5.267)
2017-11-02 22:55:17.802 INFO 17207 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2017-11-02 22:55:17.802 INFO 17207 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2017-11-02 22:55:17.822 INFO 17207 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 20 ms
localhost:8080/helloJsp转到helloJsp.jsp
localhost:8080/now转到now.ftl
localhost:8080/转到web.ftl
不存在页面转到error.ftl