SpringBoot的搭建笔记

1.先建立项目
项目建立后，在application.properties配置端口：

server.port= 80

创建Control类：

@RestController
@RequestMapping("/haha")
public class TestControl {

    @RequestMapping(path = {"/forever"})
    public String HelloSpring(){
        return "{data:hahaforever111}";
    }

}

开启服务，输入地址：http://localhost/haha/forever，访问到数据。

2.集成mySql数据库：
在pom.xml里添加依赖：

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

在application.properties配置数据库信息：

spring.datasource.url=jdbc:mysql://localhost:3306/myuserinfos?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456

访问数据库代码:

@Autowired
    private JdbcTemplate jdbcTemplate;

    @RequestMapping("/getForever")
    public String getDbType() {
        String sql = "select * from user_info_haha";
        Map a = (Map) jdbcTemplate.queryForList(sql).get(0);
        return "{data:\""+a.get("name").toString()+"\"}";
    }

3.传参方式：

@RequestMapping(path = {"/getParamDemo1/{id}"})
    public String getParamDemo1 (@PathVariable("id") int userId){
        System.out.println("get param " + userId);
        return "success get param "+userId;
    }

@RequestMapping(path = {"/getParamDemo2"} ,method = RequestMethod.GET)
    public String getParamDemo2 (@RequestParam(value="param1",required = false) int param){
        System.out.println("get param " + param);
        return "success get param "+param;
    }

4.调用外部接口：

import org.springframework.http.*;
import org.springframework.stereotype.Service;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

@Service
public class MTestClient {
    public static String sendPostRequest(String url, MultiValueMap<String, String> params){
        RestTemplate client = new RestTemplate();
        //新建Http头，add方法可以添加参数
        HttpHeaders headers = new HttpHeaders();
        //设置请求发送方式
        HttpMethod method = HttpMethod.POST;
        // 以表单的方式提交
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        //将请求头部和参数合成一个请求
        HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>(params, headers);
        //执行HTTP请求，将返回的结构使用String 类格式化（可设置为对应返回值格式的类）
        ResponseEntity<String> response = client.exchange(url, method, requestEntity,String .class);

        return response.getBody();
    }

}

5.显示html页：
在templates下添加html文件，
在application.properties下添加代码：

spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.html

在pom.xml中添加依赖：

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

调用控制器：

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/ht")
public class HtmlControl {

    @RequestMapping("/hhh")
    public String toHtml(){
            return "my_test_htfile"; //当浏览器输入/hhh，会返回 /templates/my_test_htfile.html页面
        }
}

6.打包
继承SpringBootServletInitializer类，实现configure方法：

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class DemoApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

    @Override//为了打包springboot项目
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }
}

在pom下添加代码：

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.lml.demo.DemoApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

选中clean complie package 点击运行：

image.png

最后在target下找到jar包，使用 java -jar xxx.jar命令开启服务

image.png

7.添加ssl证书：
先把证书文件拷贝到resources下，在application.properties下添加信息：

server.ssl.key-store=classpath:XXX.jks
server.ssl.key-store-password=XXXXXX
server.ssl.keyStoreType=JKS