SpringBoot实现MySQL数据前端显示

使用springboot框架进行数据库信息的读取并且展示在页面上。Springboot框架相对来说比较简单，直接在pom文件中加入依赖就可以直接使用服务器，不需要再搭建tomcat。

• 定义映射实体类，类中的属性和类型要和数据库表中的字段相对应

@Entity
public class ExceptionOutput {
    @Id
    @GeneratedValue(strategy= GenerationType.AUTO)

    private int id;
    private String fan_no;
    private String call_time;
    private int call_count;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public void setFan_no(String fan_no) {
        this.fan_no = fan_no;
    }

    @Override
    public String toString() {
        return "ExceptionOutput{" +
                "id=" + id +
                ", fan_no='" + fan_no + '\'' +
                ", call_time='" + call_time + '\'' +
                ", call_count=" + call_count +
                '}';
    }

    public void setCall_time(String call_time) {
        this.call_time = call_time;
    }

    public void setCall_count(int call_count) {
        this.call_count = call_count;
    }

    public String getFan_no() {
        return fan_no;
    }

    public int getCall_count() {
        return call_count;
    }



    public String getCall_time() {
        return call_time;
    }
}

• 定义数据访问层

public interface ExceptionInfoRepository extends JpaRepository<ExceptionOutput, Long> {

}

• 定义Controller类

@Controller
public class InforController {
    @Autowired
    private ExceptionInfoRepository info;
    @RequestMapping("/query")
    @ResponseBody
    public List queryAll(){
        return  info.findAll();
    }
    @RequestMapping("/hat")
    public String Show(Model model){
        model.addAttribute("info",info.findAll());
        return "blank";
    }

• 进行数据访问并输出到表格中

 div>
             <div class="row">
            <div class="col-md-12">
               <div class="alert alert-success">
                   <table border="2" align="center">
                       <tr>
                           <td>序号td>
                           <td>风机编号td>
                           <td>报警时间td>
                           <td>30s内温度高于80度次数td>
                       tr>
                       <tr th:each ="i:${info}">
                           <td th:text = "${i.id}">td>
                           <td th:text = "${i.fan_no}">td>
                           <td th:text = "${i.call_time}">td>
                           <td th:text = "${i.call_count}">td>
                       tr>
                   table>
               div>
            div>

        div>  

工程源码
注解需要注意几个相应的类对应要明确