README.md

javaee-ssm-crud

一、Bootstrap网站 https://v3.bootcss.com/getting-started/#template

二、JQuery （1）多个元素添加点击事件 $("#btn_save_emp").click(） ----如果多个btn_save_emp要添加点击事件，会出现只有第一个有效 方法一、 $(document).on("click","#btn_edit",function () ----有效 方法二、 用class筛选，而不是用id $(".check_item").prop("checked",$(this).prop("checked"));

（2）获取tag属性值

（3）全选、全不选逻辑 $(".check_item").click(function () { var flag=$(".check_item:checked").length==$(".check_item").length; $("#check_all").prop("checked",flag); }); 如果通过class筛选不行的话，改为用$(document).on("click","#btn_edit",function () 筛选

（4）删除多个

$("#emp_delete_all_btn").click(function () { var deleteNams=""; var deleteIds=""; $.each($(".check_item:checked"),function () { deleteNams+=$(this).attr("empName")+","; deleteIds+=$(this).attr("empId")+"-"; }) var names=deleteNams.substring(0,deleteNams.length-1); var ids=deleteIds.substring(0,deleteIds.length-1); if(confirm("确定删除【"+names+"】吗？")){ $.ajax({ url:"${APP_PATH}/emp/"+ids, type:"DELETE", success:function (result) { if(result.code==0){ alert(result.msg); } } }) } });

@ResponseBody @RequestMapping(value = "/emp/{empIds}",method = RequestMethod.DELETE) public CommonResult deleteEmp(@PathVariable("empIds") String empIds){

if(empIds.contains("-")){
    String[] ids=empIds.split("-");
    List<Integer> idList=new ArrayList<>();
    for(String id:ids){
    idList.add(Integer.parseInt(id));
    }
    employeeService.deleteBatch(idList);
}else {
    employeeService.delete(Integer.parseInt(empIds));
}
return CommonResult.success();

}

public void deleteBatch(List idList) { EmployeeExample employeeExample=new EmployeeExample(); EmployeeExample.Criteria criteria = employeeExample.createCriteria(); criteria.andEmpIdIn(idList); employeeMapper.deleteByExample(employeeExample); }

三、Ajax直接发送PUT请求 $.ajax({ url:"${APP_PATH}/emp/"+$("#btn_edit_save_emp").attr("empId"), type:"PUT", data:$("#myEditModal form").serialize(), success:function (result) { if(result.code==0){ alert("success"); } } }) web.xml中需要加过滤器

httpPutFormContentFilter org.springframework.web.filter.HttpPutFormContentFilter httpPutFormContentFilter /*

四、Spring的单元测试--模拟网络请求 @RunWith(SpringJUnit4ClassRunner.class) @WebAppConfiguration @ContextConfiguration(locations = {"classpath:applicationContext.xml", "classpath:dispatcherServlet-servlet.xml"}) public class MvcTest {

//传入SpringMvc的ioc
@Autowired
WebApplicationContext context;
//虚拟mvc请求，获取到处理结果
MockMvc mockMvc;

@Before
public void initMockMvc() {
    mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
}

@Test
public void testPage() throws Exception {
    //模拟请求拿到返回值
    MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/emps").param("pn", "1")).andReturn();
    //请求成功后，请求域中会有pageInfo
    MockHttpServletRequest request = result.getRequest();
    PageInfo pageInfo = (PageInfo) request.getAttribute("pageInfo");
    System.out.println("当前页码"+pageInfo.getPageNum());
    System.out.println("总页码"+pageInfo.getPages());
    System.out.println("总记录数"+pageInfo.getTotal());
    int[] nums=pageInfo.getNavigatepageNums();
    for(int i :nums){
        System.out.println(" "+i);
    }
    List<Employee> list = pageInfo.getList();
    for(Employee employee: list){
        System.out.println("ID "+employee.getdId()+" name "+employee.getEmpName());
    }

}

}