springMVC_代码007(未授权)

本文介绍: springMVC中的bean仅仅指的是表现层的bean，不包括数据层和业务逻辑层的bean，为了避免springConfig错误的加载到springMVC的bean，我们需要在springConfig加载控制的bean时去掉springMVC控制的bean，也就是表现层的bean。并把参数传入，注意访问路径中的参数与方法中形参的名字要一致。传入引用类型的数据：对引用类型数据的默认处理是先把引用类型数据创建出一个对象，然后把获取的数据参数insert到对象中。法二：把表现层的bean从扫描的范围中去掉。

springMVC技术与servlet技术相同，均属于web层开发技术。

springMVC是一种基于Java实现MVC模型的轻量级web框架。springMVC中的bean仅仅指的是表现层的bean，不包括数据层和业务逻辑层的bean，为了避免springConfig错误的加载到springMVC的bean，我们需要在springConfig加载控制的bean时去掉springMVC控制的bean，也就是表现层的bean。

springConfig去掉表现层的bean的方法有俩种：

法一：不加载表现层的bean

package org.example.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.stereotype.Controller;

@Configuration
//在spring加载控制bean时，去掉加载的springMVC控制的bean
//法一：不加载表现层的bean
@ComponentScan({"org.example.dao","org.example.service"})
public class springConfig {
}

法二：把表现层的bean从扫描的范围中去掉

package org.example.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.stereotype.Controller;

@Configuration
//在spring加载控制bean时，去掉加载的springMVC控制的bean
//法二：把表现层的bean从扫描范围中去掉
@ComponentScan(value = "org.example",
excludeFilters = @ComponentScan.Filter(
   type = FilterType.ANNOTATION,  //按注解排除扫描的bean
   classes = Controller.class  //告诉它排除什么注解的bean
  )
)
public class springConfig {
}

package org.example.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@ComponentScan("org.example.Controller")

@EnableWebMvc
public class springMVCConfig {
}

package org.example.Controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/postman")
public class userRequest {

}

package org.example.Controller;

import org.example.pojo.user;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/postman")
public class userRequest {

    @RequestMapping("/postman1")
    @ResponseBody //作用是把return的返回值作为响应数据
    public String postman1(String name,int age){ //将get请求的参数作为形参输入就可以接收了。
        System.out.println("name==>"+name);
        System.out.println("age==>"+age);
        return "{'module':'postman1'}";
    }
}

@RequestMapping("/postman2")
    @ResponseBody
    public String postman2(@RequestParam("name") String username, int age){

        System.out.println("name==>"+username);
        System.out.println("age==>"+age);
        return"{'module':'postman2'}";
    }

@RequestMapping("/postman3")
    @ResponseBody
    public String postman3(user user){
        System.out.println("user==>"+user);
        return "{'module':'postman3'}";
    }

//数组参数
    @RequestMapping("/postman5")
    @ResponseBody
    public String postman5(String[] likes){
        System.out.println("likes==>"+ Arrays.toString(likes));
        return "{'module':'postman5'}";
    }

@RequestMapping("/postman6")
    @ResponseBody
    public String postman6(@RequestParam List<String> likes){
        System.out.println("likes==>"+likes);
        return "{'module':'postman6'}";
    }

@RequestMapping("/postman7")
    @ResponseBody
    public String postman7(@RequestBody List<String> likes){
        System.out.println("likes==>"+likes);
        return "'module':'postman7'";
    }

    @RequestMapping("/postman8")
    @ResponseBody
    public String postman8(@RequestBody user user){
        System.out.println("user==>"+user);
        return "'module':'postman8'";
    }

 @RequestMapping("/postman10")
    @ResponseBody
    public String postman10(Date date,
                            @DateTimeFormat(pattern = "yyyy-MM-dd") Date date1,
                            @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") Date date2){
        System.out.println("date==>"+date);
        System.out.println("date1==>"+date1);
        System.out.println("date2==>"+date2);
        return "{;module':'postman10'}";
    }