Function development of user information management

Background login function development

• Demand analysis

• Code development

  

• A functional test

Background exit function development

• Demand analysis

• Code development

• A functional test

Improve the background login function

• Log in first when the user is not logged in

• Use filter / Interceptor

• filter

  • 

• How to create a filter
  • First create a class
  • Add annotations @WebFilter(filtername=" This is the same as the class name ",urlPatterns=“/*”)
  • Implementation interface Filter
  • Rewriting methods General writing doFilter The method will do
  • Add an annotation to the startup class @ServletComponentScan

Implementation logic

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New employees

Paging query of employee information

• How to configure MybatisPlus Pagination plug-in for ？

@Configuration
public class MybatisPlusConfig {
     

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
     
        MybatisPlusInterceptor mpi = new MybatisPlusInterceptor();
        mpi.addInnerInterceptor(new PaginationInnerInterceptor());
        return mpi;
    }
}

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
     
        log.info("page= {}, pageSize= {}, name= {}",page,pageSize,name);

        // Construct a paging constructor 
        Page pageinfo= new Page(page,pageSize);
        // Construct condition constructors 
        LambdaQueryWrapper<Employee> lqw=new LambdaQueryWrapper();
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        // Add sorting criteria   By update time 
        lqw.orderByAsc(Employee::getUpdateTime);
        // Execute the query 
        employeeService.page(pageinfo,lqw);
        return R.success(pageinfo);
    }

Enable / disable employee account

• Js Yes Long Loss of precision in data processing , That leads to the submission of id And in the database id atypism
• resolvent
• We will respond to the server Json Data time , United will Long Type data is converted to string data for processing

Edit employee information

• Echo employee information

   @GetMapping("/{id}")
   public R<Employee> edit(@PathVariable Long id){
     
       log.info(" according to id Query employee information ");
       Employee emp = employeeService.getById(id);
       if(emp!=null){
     
           return R.success(emp);
       }
       return R.error(" Edit failed ");
   }

• There's a little detail ： @GetMapping(“/{id}”)
• This "/{id}" Don't add it in front by mistake "/${id}" Don't confuse