springmvc中的json数据转为字符串使用到的jar包,将servlet设置为bean对象

2023-09-08

<dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.15.2</version>
</dependency>

ServletConfig

package com.hh.config;

import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import javax.servlet.Filter;

/**
 * @author hh
 * @version 1.0
 * @DATE 2023-09-08 10:09:20
 */
public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[0];
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{
                SpringmvcConfig.class
        };
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

    //设置中文乱码的问题

    @Override
    protected Filter[] getServletFilters() {
        CharacterEncodingFilter filter = new CharacterEncodingFilter();
        filter.setEncoding("utf-8");
        return new Filter[]{filter};
    }
}

SpringmvcConfig

package com.hh.config;

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

/**
 * @author hh
 * @version 1.0
 * @DATE 2023-09-08 10:08:31
 */
@Configuration
@ComponentScan({"com.hh.controller"})
@EnableWebMvc//开启json转字符串
public class SpringmvcConfig {
}

AccountController

package com.hh.controller;

import com.hh.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.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.Arrays;
import java.util.List;

/**
 * @author hh
 * @version 1.0
 * @DATE 2023-09-08 10:28:46
 */
@Controller
@RequestMapping("/account")
public class AccountController {

    @RequestMapping("/listjson")
    @ResponseBody
    public String commonParamListJson(@RequestBody List<String> list){
        System.out.println("数组参数arrs==>"+ list);
        System.out.println("AccountController commonParamList...");
        return "{'info':'huahua is the best'}";
    }
}

postman中传递测试的值

 测试传递pojo对象

@RequestMapping("/pojoJson")
    @ResponseBody
    public String pojoJson(@RequestBody User user){
        System.out.println("普通参数pojo==>"+user);
        System.out.println("AccountController commonParamPojo...");
        return "{'info':'huahua is the best'}";
    }

 测试集合

@RequestMapping("/listjson2")
    @ResponseBody
    public String listjson2(@RequestBody List<User> list){
        System.out.println("集合参数list==>"+ list);
        System.out.println("AccountController listjson2...");
        return "{'info':'huahua is the best'}";
    }