查询，打开列表页面

CompanyController

//查询 1 打开列表页面
    @RequestMapping(path="/toList",method = RequestMethod.GET)
    public String toList(){
        return "company/company-list";
    }

后台代码

TestCompanyService

@Test
    public void test01(){
        //1:编写了业务逻辑的测试
        //等号 左边是接口 右边是实现类
        //ICompanyService  service = new CompanyServiceImpl();
        List<Company> list = service.findAll();
        System.out.println(list);
    }

ICompanyService

<Company> findAll();

CompanyServiceImpl

@Autowired
    ICompanyDao iCompanyDao;
    public List<Company> findAll() {//service要调用dao查询数据，所以要注入
        return iCompanyDao.findAll();
    }

ICompanyDao

<Company> findAll();

ICompanyDao.xml

<select id="findAll" resultType="company">
select
    id,
    name ,
    expiration_date as expirationDate ,
    address,
    license_id as licenseId  ,
    representative ,
    phone  ,
    company_size as companySize  ,
    industry  ,
    remarks ,
    state,
    balance ,
    city
from ss_company
    </select>

前台代码

CompanyController

//查询 1 打开列表页面
    @RequestMapping(path="/toList",method = RequestMethod.GET)
    public String toList(Model model){
        //调service获取数据
        List<Company> list = iCompanyService.findAll();
        l.info("toList list="+list);
        model.addAttribute("list",list);
        //将数据发到页面，使用标签
        return "company/company-list";
    }

company-list.jsp

使用foreach与el表达式等显示。