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Java，SpringBoot，接收Get、Post及不同Content-Type，类型转换

智云科技 发布于 2023年3月17日 评论关闭 阅读(149)

HTTP Content-Type：

GET请求URL传递参数（Content-Type可能为空）：

功能描述：URL地址传递参数，通用：@ request Param、@PathVariable和对象接收，局部类型转换（日期类型）。 

 package com.what21.demo.controller;

import com.alibaba.fastjson. JSON ;
import com.what21.demo.controller.param.UrlEncodedTransfer;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind. annotation .*;
import org.springframework.web.context.request.WebRequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import  java .text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.Map;

@Controller("/urlParamTransfer")
@RequestMapping("/urlParamTransfer")
public class UrlParamTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
         Map <String, String[]>  params Map = request.getParameterMap();
        if (paramsMap != null) {
            for (String key : paramsMap.keySet()) {
                System.out.println(key + "=" + Arrays.toString(paramsMap.get(key)));
            }
        }
        return JSON.toJSONString(paramsMap);
    }

    @RequestMapping(path = "/bean2")
    @ResponseBody
    public Object bean2(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") String dateStr) {
        UrlEncodedTransfer urlParamTransfer = new UrlEncodedTransfer();
        urlParamTransfer.setId(id);
        urlParamTransfer.setName(Arrays.toString(names));
        try {
            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            urlParamTransfer.setDate(dateFormat.parse(dateStr));
        } catch ( Exception  e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(urlParamTransfer);
    }

    @RequestMapping(path = "/bean3/{id}/{name}/{date}")
    @ResponseBody
    public Object bean3(HttpServletRequest request, @PathVariable("id") Integer id, @PathVariable("name") String name,
                        @PathVariable("date") String dateStr) {
        UrlEncodedTransfer urlParamTransfer = new UrlEncodedTransfer();
        urlParamTransfer.setId(id);
        urlParamTransfer.setName(name);
        try {
            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            urlParamTransfer.setDate(dateFormat.parse(dateStr));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(urlParamTransfer);
    }

    /**
     * 局部转换
     *
     * @param binder
     * @param request
     */
    @InitBinder
    public  void  initBinder(WebDataBinder binder, WebRequest request) {
        //转换日期
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // CustomDateEditor为自定义日期编辑器
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
    }

    @RequestMapping(path = "/bean4")
    @ResponseBody
    public Object bean4(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") Date date) {
        UrlEncodedTransfer urlParamTransfer = new UrlEncodedTransfer();
        urlParamTransfer.setId(id);
        urlParamTransfer.setName(Arrays.toString(names));
        urlParamTransfer.setDate(date);
        return JSON.toJSONString(urlParamTransfer);
    }

    @RequestMapping(path = "/bean5/{id}/{name}/{date}")
    @ResponseBody
    public Object bean5(HttpServletRequest request, @PathVariable("id") Integer id, @PathVariable("name") String name,
                        @PathVariable("date") Date date) {
        UrlEncodedTransfer urlParamTransfer = new UrlEncodedTransfer();
        urlParamTransfer.setId(id);
        urlParamTransfer.setName(name);
        urlParamTransfer.setDate(date);
        return JSON.toJSONString(urlParamTransfer);
    }

    @RequestMapping(path = "/bean6")
    @ResponseBody
    public Object bean6(HttpServletRequest request, UrlEncodedTransfer urlParamTransfer) {
        System.out.println(">>>>" + request.get Header ("Content-Type"));
        return JSON.toJSONString(urlParamTransfer);
    }

}
  
 package com.what21.demo.controller.param;

import lombok.Data;

import java.util.Date;

@Data
public class UrlEncodedTransfer {

     private  Integer id;

    private String name;

    private Date date;

}

功能测试： 

 #bean1
名称&name=名称2&date=1995-09-15 12:12:12
{"id":["123"],"name":["名称","名称2"],"date":["1995-09-15 12:12:12"]}

#bean2
名称&name=名称2&date=1995-09-15 12:12:12
{"date":811138332000,"id":123,"name":"[名称, 名称2]"}

#bean3
名称/1995-09-15 12:12:12
{"date":811138332000,"id":123,"name":"名称"}

#bean4
名称&name=名称2&date=1995-09-15 12:12:12
{"date":811138332000,"id":123,"name":"[名称, 名称2]"}

#bean5
名称/1995-09-15 12:12:12
{"date":811138332000,"id":123,"name":"名称"}

#bean6
名称&date=1995-09-15 12:12:12&name=名称2
{"date":811138332000,"id":123,"name":"名称,名称2"}

Header头传递参数

功能描述：HTTP协议头传递参数，使用@RequestHeader接收参数。 

 package com.what21.demo.controller;

import com.alibaba.fastjson.JSON;
import com.what21.demo.controller.param.HeaderTransfer;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Enumeration;
import java.util. HashMap ;
import java.util.Map;

@Controller("/headerTransfer")
@RequestMapping("/headerTransfer")
public class HeaderTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
        Map<String, Object> headerMap = new HashMap<>();
        Enumeration<String> enumer = request.getHeaderNames();
        while (enumer.hasMoreElements()) {
            String headName = (String) enumer.nextElement();
            String headValue = request.getHeader(headName);
            headerMap.put(headName, headValue);
        }
        return JSON.toJSONString(headerMap);
    }

    @RequestMapping(path = "/bean2")
    @ResponseBody
    public Object bean2(HttpServletRequest request, @RequestHeader("id") Integer id, @RequestHeader("name") String[] names,
                        @RequestHeader("date") String dateStr) {
        HeaderTransfer headerTransfer = new HeaderTransfer();
        headerTransfer.setId(id);
        headerTransfer.setName(Arrays.toString(names));
        try {
            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            headerTransfer.setDate(dateFormat.parse(dateStr));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(headerTransfer);
    }

}
  
 package com.what21.demo.controller.param;

import lombok.Data;

import java.util.Date;

@Data
public class HeaderTransfer {

    private Integer id;

    private String name;

    private Date date;

}

功能测试： 

 #bean1

{"date":"1995-09-15 12:12:12","postman-token":"02e70588-c0c5-493b-bb08-97adcb7938ad","name":"name","host":"127.0.0.1:8080","connection":"keep-alive","id":"123","accept-encoding":"gzip, deflate, br","user- agent ":"PostmanRuntime/7.26.8","accept":"*/*"}

#bean2

{"date":811138332000,"id":123,"name":"[name]"}

POST请求（application/x-www-from-urlencoded）

功能描述：POST请求，Content-Type为application/x-www-from-urlencoded，使用： @RequestParam和对象接收参数。 

 package com.what21.demo.controller;

import com.alibaba.fastjson.JSON;
import com.what21.demo.controller.param.UrlEncodedBodyTransfer;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.WebRequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.Map;

@Controller("/urlEncodedBodyTransfer")
@RequestMapping("/urlEncodedBodyTransfer")
public class UrlEncodedBodyTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
        Map<String, String[]> paramsMap = request.getParameterMap();
        if (paramsMap != null) {
            for (String key : paramsMap.keySet()) {
                System.out.println(key + "=" + Arrays.toString(paramsMap.get(key)));
            }
        }
        return JSON.toJSONString(paramsMap);
    }

    @RequestMapping(path = "/bean2")
    @ResponseBody
    public Object bean2(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") String dateStr) {
        UrlEncodedBodyTransfer urlEncodedBodyTransfer = new UrlEncodedBodyTransfer();
        urlEncodedBodyTransfer.setId(id);
        urlEncodedBodyTransfer.setName(Arrays.toString(names));
        try {
            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            urlEncodedBodyTransfer.setDate(dateFormat.parse(dateStr));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(urlEncodedBodyTransfer);
    }

    /**
     * 局部转换
     *
     * @param binder
     * @param request
     */
    @InitBinder
    public void initBinder(WebDataBinder binder, WebRequest request) {
        //转换日期
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // CustomDateEditor为自定义日期编辑器
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
    }

    @RequestMapping(path = "/bean3")
    @ResponseBody
    public Object bean3(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") Date date) {
        UrlEncodedBodyTransfer urlEncodedBodyTransfer = new UrlEncodedBodyTransfer();
        urlEncodedBodyTransfer.setId(id);
        urlEncodedBodyTransfer.setName(Arrays.toString(names));
        urlEncodedBodyTransfer.setDate(date);
        return JSON.toJSONString(urlEncodedBodyTransfer);
    }

    @RequestMapping(path = "/bean4")
    @ResponseBody
    public Object bean4(HttpServletRequest request, UrlEncodedBodyTransfer urlEncodedBodyTransfer) {
        System.out.println(">>>>" + request.getHeader("Content-Type"));
        // multipart/form-data; boundary=--------------------------804118925244390549364281
        // application/x-www-form-urlencoded
        return JSON.toJSONString(urlEncodedBodyTransfer);
    }

}
  
 package com.what21.demo.controller.param;

import lombok.Data;

import java.util.Date;

/**
 * application/x-www-from-urlencoded
 */
@Data
public class UrlEncodedBodyTransfer {

    private Integer id;

    private String name;

    private Date date;

}

功能测试： 

 #bean1

{"id":["123"],"name":["名字1","名字2"],"date":["1995-09-15 12:12:12"]}

#bean2

{"date":811138332000,"id":123,"name":"[名字1, 名字2]"}

#bean3

{"date":811138332000,"id":123,"name":"[名字1, 名字2]"}

#bean4

{"date":811138332000,"id":123,"name":"名字1,名字2"}


结论：@RequestBody，不支持：application/x-www-form-urlencoded
@RequestMapping(path = "/bean5")
@ResponseBody
public Object bean5(HttpServletRequest request, @RequestBody UrlEncodedBodyTransfer urlEncodedBodyTransfer) {
    System.out.println(">>>>" + request.getHeader("Content-Type"));
    return JSON.toJSONString(urlEncodedBodyTransfer);
}
报错：
Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported]

POST请求（multipart/form-data）

功能描述：POST请求，Content-Type为multipart/form-data，使用： @RequestParam和对象接收参数。 

 package com.what21.demo.controller;

import com.alibaba.fastjson.JSON;
import com.what21.demo.controller.param.FormDataTransfer;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.WebRequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

@Controller("/formDataTransfer")
@RequestMapping("/formDataTransfer")
public class FormDataTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
        Map<String, String[]> paramsMap = request.getParameterMap();
        if (paramsMap != null) {
            for (String key : paramsMap.keySet()) {
                System.out.println(key + "=" + Arrays.toString(paramsMap.get(key)));
            }
        }
        return JSON.toJSONString(paramsMap);
    }

    @RequestMapping(path = "/bean2")
    @ResponseBody
    public Object bean2(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") String dateStr) {
        FormDataTransfer formDataTransfer = new FormDataTransfer();
        formDataTransfer.setId(id);
        formDataTransfer.setName(Arrays.toString(names));
        try {
            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            formDataTransfer.setDate(dateFormat.parse(dateStr));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(formDataTransfer);
    }

    /**
     * 局部转换
     *
     * @param binder
     * @param request
     */
    @InitBinder
    public void initBinder(WebDataBinder binder, WebRequest request) {
        //转换日期
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // CustomDateEditor为自定义日期编辑器
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
    }

    @RequestMapping(path = "/bean3")
    @ResponseBody
    public Object bean3(HttpServletRequest request, @RequestParam("id") Integer id, @RequestParam("name") String[] names,
                        @RequestParam("date") Date date) {
        FormDataTransfer formDataTransfer = new FormDataTransfer();
        formDataTransfer.setId(id);
        formDataTransfer.setName(Arrays.toString(names));
        formDataTransfer.setDate(date);
        return JSON.toJSONString(formDataTransfer);
    }

    @RequestMapping(path = "/bean4")
    @ResponseBody
    public Object bean4(HttpServletRequest request, FormDataTransfer formDataTransfer) {
        System.out.println(">>>>" + request.getHeader("Content-Type"));
        // multipart/form-data; boundary=--------------------------804118925244390549364281
        // application/x-www-form-urlencoded
        return JSON.toJSONString(formDataTransfer);
    }

    @RequestMapping(path = "/bean6")
    @ResponseBody
    public Object bean6(HttpServletRequest request, HttpServletResponse response) {
        System.out.println("" + request.getHeader("Content-Type"));
        Map<String, Object> paramsMap = new HashMap<>();
        //
        return JSON.toJSONString(paramsMap);
    }


}
  
 package com.what21.demo.controller.param;

import lombok.Data;

import java.util.Date;

/**
 * multipart/form-data
 */
@Data
public class FormDataTransfer {

    private Integer id;

    private String name;

    private Date date;

}

功能测试： 

 #bean1

{"id":["123"],"name":["名字1","名字2"],"date":["1995-09-15 12:12:12"]}

#bean2

{"date":811138332000,"id":123,"name":"[名字1, 名字2]"}

#bean3

{"date":811138332000,"id":123,"name":"[名字1, 名字2]"}

#bean4

{"date":811138332000,"id":123,"name":"名字1,名字2"}


结论：@RequestBody，不支持：multipart/form-data
@RequestMapping(path = "/bean5")
@ResponseBody
public Object bean5(HttpServletRequest request, @RequestBody FormDataTransfer formDataTransfer) {
    System.out.println(">>>>" + request.getHeader("Content-Type"));
    return JSON.toJSONString(formDataTransfer);
}
报错：
Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'multipart/form-data;boundary=--------------------------034028183147454180710906;charset=UTF-8' not supported]

POST请求（application/json）

功能描述：POST请求，Content-Type为application/json，使用： @RequestBody接收参数。 

 package com.what21.demo.controller;

import com.alibaba.fastjson.JSON;
import com.what21.demo.controller.param.JsonBodyTransfer;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

@Controller("/jsonBodyTransfer")
@RequestMapping("/jsonBodyTransfer")
public class JsonBodyTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
        //
        JsonBodyTransfer jsonBodyTransfer = JSON.parseObject(toJson(request), JsonBodyTransfer.class);
        return jsonBodyTransfer;
    }

    /**
     * @param request
     * @return
     */
    private String toJson(HttpServletRequest request) {
        String result = "";
        try {
            InputStream input = request.getInputStream();
            InputStreamReader reader = new InputStreamReader(input);
            BufferedReader bufferReader = new BufferedReader(reader);
            String line = null;
            StringBuilder sb = new StringBuilder();
            while ((line = bufferReader.readLine()) != null) {
                sb.append(line);
            }
            result = sb.toString();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;

    }

    @RequestMapping(path = "/bean2")
    @ResponseBody
    public Object bean2(HttpServletRequest request, @RequestBody JsonBodyTransfer jsonBodyTransfer) {
        return jsonBodyTransfer;
    }

}
  
 package com.what21.demo.controller.param;

import com.alibaba.fastjson.JSON;
import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;

import java.util.Date;

/**
 * application/json
 */
@Data
public class JsonBodyTransfer {

    private Integer id;

    private String name;

    @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
    private Date date;

    public static void main(String[] args) {
        JsonBodyTransfer jsonBodyTransfer = new JsonBodyTransfer();
        jsonBodyTransfer.setId(1212);
        jsonBodyTransfer.setName("名称");
        jsonBodyTransfer.setDate(new Date());
        System.out.println(JSON.toJSONString(jsonBodyTransfer));
    }

}

功能测试： 

 #bean1

---------------------------------------------------------------------
{
    "date":"1995-09-15 12:12:12",
    "id":1212,
    "name":"名称"
}
---------------------------------------------------------------------
{
    "id": 1212,
    "name": "名称",
    "date": "1995-09-15T04:12:12.000+00:00"
}
---------------------------------------------------------------------

#bean2

---------------------------------------------------------------------
{
    "date":"1995-09-15 12:12:12",
    "id":1212,
    "name":"名称"
}
---------------------------------------------------------------------
{
    "id": 1212,
    "name": "名称",
    "date": "1995-09-15 12:12:12"
}
---------------------------------------------------------------------

POST请求（application/xml）

功能描述：POST请求，Content-Type为application/xml，使用：流接收参数。 

 package com.what21.demo.controller;

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

import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Controller("/xmlBodyTransfer")
@RequestMapping("/xmlBodyTransfer")
public class XmlBodyTransferController {

    @RequestMapping(path = "/bean1")
    @ResponseBody
    public Object bean1(HttpServletRequest request, HttpServletResponse response) {
        System.out.println(">>>>" + request.getHeader("Content-Type"));
        byte[] readBytes = new byte[0];
        try {
            readBytes = readBytes(request);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new String(readBytes);
    }

    /**
     * @param request
     * @return
     * @throws IOException
     */
    private byte[] readBytes(HttpServletRequest request) throws IOException {
        int len = request.getContentLength();
        ServletInputStream input = request.getInputStream();
        byte[] buffer = new byte[len];
        input.read(buffer, 0, len);
        return buffer;
    }

}

功能测试： 

 #bean1

---------------------------------------------------------------------
<root>
    <id>1234</id>
    <name>代码</name>
</root>
---------------------------------------------------------------------
<root>
    <id>1234</id>
    <name>代码</name>
</root>
---------------------------------------------------------------------
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文章来源：智云一二三科技

文章标题：Java，SpringBoot，接收Get、Post及不同Content-Type，类型转换

文章地址：https://www.zhihuclub.com/186962.shtml

关于作者: 智云科技

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