SpringBoot访问NoSQL和简单的Thymeleaf-Spring-Spring-boot整合

SpringBoot访问NoSQL

SpringBoot访问Redis

在pom.xml添加boot-data-redis定义

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.0.1.RELEASE</version>

</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.springframework.boot</groupId>

        <artifactId>spring-boot-starter-data-redis</artifactId>

    </dependency>

</dependencies>

在application.properties添加redis连接参数

spring.redis.host=localhost

spring.redis.port=6379

定义启动类

@SpringBootApplication

public class MyBootApplication {

}

测试程序

public static void main(String[] args) {

    ApplicationContext ac =

        SpringApplication.run(MyBootApplication.class, args);

    RedisTemplate<Object,Object> redis =

        ac.getBean("redisTemplate",RedisTemplate.class);

    redis.opsForValue().set("name", "SpringBoot");

    Object name = redis.opsForValue().get("name");

    System.out.println(name);

    Dept dept = new Dept();

    dept.setDeptno(10);

    dept.setDname("JAVA");

    dept.setLoc("北京");

    redis.opsForValue().set("dept", dept);

    Dept dept1 = (Dept)redis.opsForValue().get("dept");

    System.out.println(

        dept1.getDeptno()+" "+dept1.getDname()+" "+dept1.getLoc());

}

SpringBoot访问Mongodb

在pom.xml追加boot-starter-data-mongodb定义

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.0.1.RELEASE</version>

</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.springframework.boot</groupId>

        <artifactId>spring-boot-starter-data-mongodb</artifactId>

    </dependency>

</dependencies>

在application.properties追加连接参数定义

spring.data.mongodb.uri=mongodb://localhost:27017/java20

#spring.data.mongodb.host=localhost

#spring.data.mongodb.port=27017

#spring.data.mongodb.database=java20

定义主启动类

@SpringBootApplication

public class MyBootApplication {

}

测试程序

public static void main(String[] args) {

    ApplicationContext ac =

        SpringApplication.run(MyBootApplication.class, args);

    MongoTemplate template =

        ac.getBean("mongoTemplate",MongoTemplate.class);

    List<Dept> list = template.findAll(Dept.class);

    for(Dept dept:list){

        System.out.println(

            dept.getDeptno()+" "+dept.getDname()+" "+dept.getLoc());

    }

}

SpringBoot MVC

主要封装了SpringMVC、Restful、内置tomcat等功能。

restful服务

SSM：SpringMVC、IOC、MyBatis

/dept/get GET 查询部门信息

/dept/list GET 分页查询部门信息

请求-->DispatcherServlet-->HandlerMapping-->DeptController-->DeptDao-->返回JSON结果

在pom.xml追加web、jdbc、mybatis-spring、驱动包定义

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.0.1.RELEASE</version>

</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.springframework.boot</groupId>

        <artifactId>spring-boot-starter-jdbc</artifactId>

    </dependency>

    <dependency>

        <groupId>com.oracle</groupId>

        <artifactId>ojdbc6</artifactId>

        <version>11.2.0.3</version>

    </dependency>

    <!-- mybatis、mybatis-spring、autocofigurer -->

    <dependency>

        <groupId>org.mybatis.spring.boot</groupId>

        <artifactId>mybatis-spring-boot-starter</artifactId>

        <version>1.3.0</version>

    </dependency>

    <dependency>

        <groupId>com.github.pagehelper</groupId>

        <artifactId>pagehelper-spring-boot-starter</artifactId>

        <version>1.2.3</version>

    </dependency>

</dependencies>

在application.properties追加连接参数定义

#server

server.port=8888

#datasource

spring.datasource.username=SCOTT

spring.datasource.password=TIGER

spring.datasource.url=jdbc:oracle:thin:@localhost:1521:XE

spring.datasource.driverClassName=oracle.jdbc.OracleDriver

编写实现DeptDao

定义实体类Dept（同上）

定义Mapper映射器+注解SQL

public interface DeptDao {

    @Select("select * from dept where deptno=#{no}")

    public Dept findById(int no);

    @Select("select * from dept order by deptno")

    public List<Dept> findAll();

}

编写实现DeptController

@RestController

public class DeptController {

    @Autowired

    private DeptDao deptDao;

    @GetMapping("/dept/get")// dept/get?no=xx

    public Dept load(int no){

        Dept dept = deptDao.findById(no);

        return dept;

    }

    @GetMapping("/dept/list")// dept/list?page=xx&size=xx

    public List<Dept> loadPage(

        @RequestParam(required=false,defaultValue="1",name="page")int pageNum,

        @RequestParam(required=false,defaultValue="5",name="size")int pageSize){

        PageHelper.startPage(pageNum, pageSize);

        List<Dept> list = deptDao.findAll();

        return list;

    }

}

定义启动类、追加@SpringBootApplication、@MapperScan标记

@SpringBootApplication

@MapperScan(basePackages={"cn.xdl.dao"})

public class MyBootApplication {

    public static void main(String[] args) {

        SpringApplication.run(MyBootApplication.class, args);

    }

}

启动Boot程序测试

JSP响应界面

/hello-->DispatcherServlet-->HandlerMapping-->HelloController-->ModelAndView-->ViewResolver-->/hello.jsp

在pom.xml追加web、jasper定义

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.0.1.RELEASE</version>

</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.springframework.boot</groupId>

        <artifactId>spring-boot-starter-web</artifactId>

    </dependency>

    <dependency>

        <groupId>org.apache.tomcat.embed</groupId>

        <artifactId>tomcat-embed-jasper</artifactId>

    </dependency>

</dependencies>

在application.properties追加server、viewresolver定义

#server

server.port=8888

#viewresolver

spring.mvc.view.prefix=/

spring.mvc.view.suffix=.jsp

编写HelloController

@Controller

public class HelloController {

    @GetMapping("/hello")

    public ModelAndView execute(){

        System.out.println("进入HelloController.execute处理");

        ModelAndView mav = new ModelAndView();

        mav.setViewName("hello");//hello.jsp

        mav.getModel().put("msg", "你好");

        return mav;

    }

    @GetMapping("/hello1")

    public String execute1(ModelMap model){

        System.out.println("进入HelloController.execute1处理");

        model.put("msg", "Hello");

        return "hello";

    }

}

编写hello.jsp

<html>

    <head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <title>Insert title here</title>

    </head>

    <body>

    <h1>SpringBoot JSP应用</h1>

    <h2>${msg}</h2>

    </body>

</html>

编写启动类

@SpringBootApplication

public class MyBootApplication {

    public static void main(String[] args) {

        SpringApplication.run(MyBootApplication.class, args);

    }

}

启动测试
```
http://localhost:8888/hello
```

Thymeleaf模板响应界面

模板技术是对JSP技术的一个替代品，优点如下：

使用简单、方便（JSP复杂）
运行机制简单、效率高（JSP-->Servlet-->.class-->HTML输出）

Velocity : hello.vm + VTL

Freemarker：hello.ftl + FTL

Thymeleaf：hello.html + THTL

在pom.xml中追加boot-starter-thymeleaf定义

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>1.4.7.RELEASE</version>

</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>

    <!-- web -->

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-web</artifactId>

    </dependency>

    <!-- thymeleaf -->

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-thymeleaf</artifactId>

    </dependency>

</dependencies>

在application.properties追加server配置
```
server.port=8888
```

定义Controller组件

@Controller

public class HelloController {

    @GetMapping("/hello")

    public ModelAndView execute(){

        ModelAndView mav = new ModelAndView();

        mav.setViewName("hello");///templates/hello.html

        mav.getModel().put("msg", "SpringBoot Thymeleaf");

        return mav;

    }

}

定义html模板文件，放在src/main/resources/templates目录中

<!DOCTYPE html>

<html xmlns:th="http://www.thymeleaf.org">

<head>

    <meta charset="UTF-8">

    <title>Insert title here</title>

</head>

<body>

    <h1 th:text="${msg}"></h1>

</body>

</html>

定义启动类

@SpringBootApplication

public class MyBootApplication {

    public static void main(String[] args) {

        SpringApplication.run(MyBootApplication.class, args);

    }

}

启动程序测试
```
http://localhost:8888/hello
```
1.x版本的Boot需要取消严格的模板标记校验(开始和结束必须匹配)
```
<dependency>

    <groupId>net.sourceforge.nekohtml</groupId>

    <artifactId>nekohtml</artifactId>

</dependency>
```
在application.properties添加spring.thymeleaf.mode=LEGACYHTML5