Micronaut JSON post 去掉引号

Question

在 Micronaut 控制器中使用 JSON 对象解析 post 请求。我希望它不包含引号，但它在数据库插入中引用。

这样发帖：

curl -X POST --header "Content-Type: application/json" -d '{"bookid":3,"name":"C++"}'  http://localhost:8880/book/save

这样保存：

String bookid=JSON?.bookid
  String name=JSON?.name
def b =bookService.save(bookid,name

在数据库中是这样存储的：

+--------+-------+
| bookid | name  |
+--------+-------+
| 3      | "C++" |
+--------+-------+

我希望书名只是 C++

谢谢 SR

Answer 1

您没有提供足够的项目信息来了解正在发生的事情，但 https://github.com/jeffbrown/sfgroupsjsonbinding/tree/master 上的项目演示了内置绑定的工作原理。在那里查看 README.md 文件。

https://github.com/jeffbrown/sfgroupsjsonbinding/blob/3ff4e8b39ba5fda9956ebfc67cd0b9e5d940b8f2/src/main/groovy/sfgroupsjsonbinding/BookController.groovy

package sfgroupsjsonbinding

import io.micronaut.http.annotation.Controller
import io.micronaut.http.annotation.Get
import io.micronaut.http.annotation.Post

@Controller('/book')
class BookController {

    private PersonService personService

    BookController(PersonService personService) {
        this.personService = personService
    }

    @Get('/')
    List<Person> list() {
        personService.list()
    }

    @Post('/')
    Person save(Person person) {
        personService.save person
    }

    @Get('/{id}')
    Person get(long id) {
        personService.get id
    }
}

与应用交互

 $ curl -H "Content-Type: application/json" -d '{"name":"Jeff"}' http://localhost:8080/book
{"name":"Jeff","id":1}
 $ 
 $ curl -H "Content-Type: application/json" -d '{"name":"Jake"}' http://localhost:8080/book
{"name":"Jake","id":2}
 $ 
 $ curl -H "Content-Type: application/json" -d '{"name":"Zack"}' http://localhost:8080/book
{"name":"Zack","id":3}
 $ 
 $ curl http://localhost:8080/book
[{"name":"Jeff","id":1},{"name":"Jake","id":2},{"name":"Zack","id":3}]
 $ 
 $ curl http://localhost:8080/book/1
{"name":"Jeff","id":1}
 $ 
 $ curl http://localhost:8080/book/2
{"name":"Jake","id":2}
 $ 
 $ curl http://localhost:8080/book/3
{"name":"Zack","id":3}
 $

Answer 2

我知道我有点晚了，但我一直在寻找解决方案，但没有找到任何东西。经过大量努力，我发现用“@BODY”发送 jackson "Object" 没有帮助，当我将类型更改为 "String" 时，它对我有用。

这是我的代码

def save(@Body String JSON){

    def result = [:]
    ObjectMapper objectMapper = new ObjectMapper();

    //convert json string to object
    def obj = objectMapper.readValue(JSON, Course.class);
    println(obj)

    Course course = new Course(name: obj?.name, pre: obj?.pre,
            regno: obj?.regno, enrolled: obj?.enrolled)

    course.validate()
    if(course.hasErrors()){
        println("Error: "+course.errors)
        result.put("Error is: ",course.errors)
        return result;
    }

    course.save(flush:true,failOnError: true)

    result.put("Message","Successfully Created")
    result.put("Result",course)
    return HttpResponse.created(result)
}

将它传递给 ObjectMapper，然后将它从 JSON 字符串转换为 Java 对象对我有用。

Json 我传递的字符串如下：

{
 "name" : "Data Structures",
 "pre" : "Computer Programming",
 "regno" : "249",
 "enrolled" : "90"
}

数据库中变化前后的数据存储如下：

+----+---------+------------------------+-------------------------------+----+
| id | version |        name      |   pre       |     regno        |enrolled |
+----+---------+------------------------+-------------------------------+----+
|  1 | 0 | "Computer Programming" | "Introduction to Programming"| "233"|"26"|
|  2 | 0 | Data Structures        | Computer Programming         |  249 | 90 |
+----+---------+------------------------+-------------------------------+----+

希望答案对正在寻找上述解决方案的替代解决方案的任何人有所帮助。

Answer 3

似乎我的命令 class 扩展了其他命令 class 导致了一些问题，这意味着没有任何效果。目前它确实有效，并且确实是 Zaryab baloch 上面建议的有效替代方案。

package gateway.command.controller;


import com.fasterxml.jackson.annotation.JsonProperty;
import gateway.command.event.commands.HotelSaveCommand;
import io.micronaut.http.HttpResponse;
import io.micronaut.http.MediaType;
import io.micronaut.http.annotation.Body;
import io.micronaut.http.annotation.Controller;
import io.micronaut.http.annotation.Post;
import io.micronaut.http.codec.MediaTypeCodecRegistry;
import io.micronaut.jackson.codec.JsonMediaTypeCodec;
import lombok.extern.slf4j.Slf4j;

import javax.inject.Inject;

@Slf4j
@Controller("/")
public class GatewayController  {

    @Inject
    protected MediaTypeCodecRegistry mediaTypeCodecRegistry;

    /**
     *
     * @param topic
     * @param eventType using the jsonProperty we actually extract eventType from the @Body string JSON String
     *                  The 3rd input is actual form. we post /hotel and json content there isn't actually 3 parameters
     *                  provided
     * @param
     * @return
     */
    @Post(uri = "/{topic}", consumes = MediaType.APPLICATION_JSON)
    public HttpResponse process(String topic, @JsonProperty("eventType") String eventType, @Body String formInput)  {

        JsonMediaTypeCodec mediaTypeCodec = (JsonMediaTypeCodec) mediaTypeCodecRegistry.findCodec(MediaType.APPLICATION_JSON_TYPE)
                .orElseThrow(() -> new IllegalStateException("No JSON codec found"));

        HotelSaveCommand command =  mediaTypeCodec.decode(HotelSaveCommand.class,formInput);
        if (command!=null) {
            System.out.println(command +" "+ command.getName());
        }
        //eventPublisher.publish(topic,);
        return HttpResponse.accepted();
    }

}

Micronaut JSON post 去掉引号

Micronaut JSON post strip the Quotes

grails

json

micronaut

这是我的代码

Json 我传递的字符串如下：