第三课(spring-boot+mybatis+jqgrid)

摘要：课程目标完成与与的的集成处理数据课程计划使用完成博客后台管理员列表的搜索课程分析想要完成列表的搜索，就必须对按提交搜索条件进行逻辑判断组织也就是动态步骤加入依赖使用配置使用使用注解方式动态动

完成与spring boot 与的mybatis的集成处理数据curd

使用mybatis完成博客后台管理员列表的jqgird搜索

想要完成列表的搜索，就必须对sql按提交搜索条件进行逻辑判断组织sql,也就是动态sql

// build.gradle
dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    compile("org.springframework.boot:spring-boot-starter-thymeleaf")
    compile("org.springframework.boot:spring-boot-devtools")
    // JPA Data (We are going to use Repositories, Entities, Hibernate, etc...)
    compile "org.springframework.boot:spring-boot-starter-data-jpa"
    // Use MySQL Connector-J
    compile "mysql:mysql-connector-java"
    // 使用mybatis
    compile("org.mybatis.spring.boot:mybatis-spring-boot-starter:1.3.2")
    developmentOnly("org.springframework.boot:spring-boot-devtools")
    testCompile("junit:junit")
}

spring:
  jpa:
    hibernate:
      ddl-auto: update
  datasource:
    url: jdbc:mysql://localhost:3306/db_sptest?useSSL=false
    username: mysqluser
    password: mysqlpwd
  mvc:
    static-path-pattern: /static/**
mybatis:
  type-aliases-package: hello.model

// model/AdminMapper
@Mapper
public interface AdminMapper {
    //使用注解方式
    @Select("SELECT * FROM ADMIN WHERE name = #{name} LIMIT 1")
    Admin findByName(String name);

    @Select("SELECT * FROM ADMIN WHERE id = #{id}")
    Admin findById(Integer id);

    //动态sql
    @SelectProvider(type = AdminService.class,method = "selectAdminLike")
    List findBySearch(Admin admin);

    //动态sql 返回行数
    @SelectProvider(type = AdminService.class,method = "countAdminSearch")
    @ResultType(Integer.class)
    int countBySearch(Admin admin);

}

// service/AdminService
import org.apache.ibatis.jdbc.SQL;

public class AdminService {

    // With conditionals (note the final parameters, required for the anonymous inner class to access them)
    public String selectAdminLike(Admin admin) {
        return new SQL() {{
            SELECT("A.name,A.email,A.id");
            FROM("ADMIN A");
            if (admin.getName() != null) {
                WHERE("A.name = "" + admin.getName() + """);
            }
            if (admin.getEmail() != null) {
                WHERE("A.email = " + admin.getEmail());
            }
        }}.toString();
    }

    public String countAdminSearch(Admin admin){
        return new SQL() {{
            SELECT("count(*)");
            FROM("ADMIN A");
            if (admin.getName() != null) {
                WHERE("A.name = "" + admin.getName() + """);
            }
            if (admin.getEmail() != null) {
                WHERE("A.email = " + admin.getEmail());
            }
        }}.toString();
    }
}

    // AdminController
    @GetMapping(path = "get_list")
    @ResponseBody
    public DataResponse getAdminList(
            Admin adminReq,
            @RequestParam(defaultValue = "1", value = "page") String page,
            @RequestParam(defaultValue = "10", value = "rows") String rows) {
        String total; //页数
        List admin_list;
        int records;
        records = adminMapper.countBySearch(adminReq);
        int pageSize = Integer.valueOf(rows);
        total = Integer.toString((records + pageSize - 1) / pageSize);
        DataResponse response = new DataResponse<>();
        admin_list = adminMapper.findBySearch(adminReq);
        response.setTotal(total);
        response.setRows(admin_list);
        response.setPage(page);
        response.setRecords(records);
        return response;
    }

完成使用jqgrid+spring boot+mybatis 的数据列表搜索

遗留page 和 pageSize 的传参控制，下节课对代码进行稍微的改动就可以支持

目前使用了jpa的Hibernate entity 这么用合理么？