java.lang.NoSuchMethodError: org.json.JSONObject.<init>(Ljava/lang/Object;)V
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【中文标题】java.lang.NoSuchMethodError: org.json.JSONObject.<init>(Ljava/lang/Object;)V【英文标题】： 【发布时间】：2019-10-17 17:31:23 【问题描述】：我有一个基本的 SpringBoot 2.1.5.RELEASE 应用程序。使用 Spring Initializer、JPA、嵌入式 Tomcat、Thymeleaf 模板引擎，并打包为带有一些 RestControllers 的可执行 JAR 文件。
在控制器的 1 中，这是我发送的主体：
"depositHotel": "xxx",
"destinationHotel": "aaa",
"depositHotelAmount": "0.2",
"destinationHotelAmount": "4",
"destinationAddress": [
"address": "asdf",
"tag": ""
],
"refundAddress": [
"address": "pio",
"tag": ""
]
所以我创建了这个类以将其作为 RequestBody 发送：
@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder(
"address",
"tag"
)
public class Address
public Address()
super();
public Address(String address)
super();
this.address = address;
@JsonProperty("address")
private String address;
@JsonProperty("tag")
private Object tag;
@JsonProperty("address")
public String getAddress()
return address;
@JsonProperty("address")
public void setAddress(String address)
this.address = address;
@JsonProperty("tag")
public Object getTag()
return tag;
@JsonProperty("tag")
public void setTag(Object tag)
this.tag = tag;
和
公共类 HotelswitchHotelOrderRequestBody
public static class Builder
private String depositHotel;
private String destinationHotel;
private Float depositHotelAmount;
private Float destinationHotelAmount;
private Address destinationAddress;
private Address refundAddress;
public Builder(String depositHotel, String destinationHotel)
this.depositHotel = depositHotel;
this.destinationHotel = destinationHotel;
public Builder withDepositHotelAmount (Float depositHotelAmount)
this.depositHotelAmount = depositHotelAmount;
return this;
public Builder withDestinationHotelAmount (Float destinationHotelAmount)
this.destinationHotelAmount = destinationHotelAmount;
return this;
public Builder toDestinationAddress (Address destinationAddress)
this.destinationAddress = destinationAddress;
return this;
public Builder toRefundAddress (Address refundAddress)
this.refundAddress = refundAddress;
return this;
public HotelswitchHotelOrderRequestBody build()
HotelswitchHotelOrderRequestBody order = new HotelswitchHotelOrderRequestBody();
order.depositHotel = this.depositHotel;
order.depositHotelAmount = this.depositHotelAmount;
order.destinationAddress = this.destinationAddress;
order.destinationHotel = this.destinationHotel;
order.destinationHotelAmount = this.destinationHotelAmount;
order.refundAddress = this.refundAddress;
return order;
private String depositHotel;
private String destinationHotel;
private Float depositHotelAmount;
private Float destinationHotelAmount;
private Address destinationAddress;
private Address refundAddress;
private HotelswitchHotelOrderRequestBody ()
//Constructor is now private.
public String getDepositHotel()
return depositHotel;
public void setDepositHotel(String depositHotel)
this.depositHotel = depositHotel;
public String getDestinationHotel()
return destinationHotel;
public void setDestinationHotel(String destinationHotel)
this.destinationHotel = destinationHotel;
public Float getDepositHotelAmount()
return depositHotelAmount;
public void setDepositHotelAmount(Float depositHotelAmount)
this.depositHotelAmount = depositHotelAmount;
public Float getDestinationHotelAmount()
return destinationHotelAmount;
public void setDestinationHotelAmount(Float destinationHotelAmount)
this.destinationHotelAmount = destinationHotelAmount;
public Address getDestinationAddress()
return destinationAddress;
public void setDestinationAddress(Address destinationAddress)
this.destinationAddress = destinationAddress;
public Address getRefundAddress()
return refundAddress;
public void setRefundAddress(Address refundAddress)
this.refundAddress = refundAddress;
和
public test postOrder ( HotelswitchHotelOrderRequestBody order)
HttpEntity<String> entity = new HttpEntity<String>(new JSONObject(order).toString(), headers());
ResponseEntity<OrderResponse> response = new RestTemplate()
.exchange(URL,
HttpMethod.POST, entity, new ParameterizedTypeReference<OrderResponse>() );
return response.getBody();
但我有这个错误：
at io.bonanza.backend.service.Hotelswitch.HotelswitchHotelService.postOrder(HotelswitchHotelService.java:132)
at io.bonanza.backend.service.Hotelswitch.HotelswitchHotelServiceTests.testPostOrder(HotelswitchHotelServiceTests.java:151)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
pom.xml：
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.googlecode.libphonenumber</groupId>
<artifactId>libphonenumber</artifactId>
<version>8.9.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<!-- Spring Security -->
<!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-test -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<!-- <version>4.5.4</version> -->
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.ws.rs/javax.ws.rs-api -->
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
<!-- Firebase dependencies -->
<dependency>
<groupId>com.google.firebase</groupId>
<artifactId>firebase-admin</artifactId>
<version>5.4.0</version>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-firestore</artifactId>
<version>0.26.0-beta</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>23.0</version>
</dependency>
</dependencies>
【问题讨论】：
请添加您的 POM。这通常是由于不允许 Spring 管理依赖项。它管理。 有时 pom.xml 文件 (Maven) 中的依赖项存在问题。造成这种情况的原因可能有很多：版本冲突，或者使用不同版本两次声明相同依赖项的冲突。 你能把 mvn dependency:tree 的结果贴出来吗？ 您使用哪个 Java 版本来运行它？ 针对这个问题，导入了多个版本的org.json。解决方案是将其从导入它的依赖项中排除，并指定预期的依赖项。此外，您可以使用fastjson，它也已导入到您的项目中。 【参考方案1】：您的类路径似乎有多个 org.json:json 依赖项。
看着它：
org.springframework.boot:spring-boot-starter-test 取决于
com.jayway.jsonpath:json-path 又带来了
org.json:json 可能比其版本更新/旧
io.jsonwebtoken jjwt 0.9.1 依赖于
您可以尝试从 spring-boot-starter-test/io.jsonwebtoken 中排除这种传递依赖：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
</exclusion>
</exclusions>
</dependency>
或/与
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
<exclusions>
<exclusion>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
</exclusion>
</exclusions>
</dependency>
但是 json-path 中的某些内容可能依赖于旧 json 库中的某些内容，而新版本已不再存在，因此请谨慎行事并彻底测试所有内容。 也有可能是别的东西带来了 org.json:json。
要验证，请运行mvn dependency:tree 并在生成的输出中搜索org.json:json。
【讨论】：
如果回答后有任何问题或不起作用，请发表评论。如果它解决了接受答案的问题，将不胜感激。【参考方案2】：请检查此链接： spring-boot issue 8706
从 spring-boot-starter-test 中排除 android-json 对我有用。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>com.vaadin.external.google</groupId>
<artifactId>android-json</artifactId>
</exclusion>
</exclusions>
</dependency>
【讨论】：
【参考方案3】：我在另一个页面上找到了这个。我在这里尝试了检查过的答案，但它不适用于我的，但是当我将它插入我的 pom 文件时它可以工作。我正在使用 mockito 运行单元测试，其中一个端点使用 JSONObject.put 并且给了我没有这样的方法错误。
<dependency>
<groupId>
org.springframework.boot
</groupId>
<artifactId>
spring-boot-starter-test
</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
</exclusion>
<exclusion>
<groupId>com.vaadin.external.google</groupId>
<artifactId>android-json</artifactId>
</exclusion>
</exclusions>
</dependency>
【讨论】：
这对我有用，但我也必须在更改后刷新我的 Maven 依赖项。谢谢。 也为我工作。仅添加 org.json 排除是不够的。 (spring-boot 2.4.4 和 Junit 5)【参考方案4】：您应该不需要 JSON 对象
HttpEntity<HotelswitchHotelOrderRequestBody> entity = new HttpEntity<HotelswitchHotelOrderRequestBody>(order, headers());
如果您只想将对象转换为字符串，请使用对象映射器。
ObjectMapper objectMapper = new ObjectMapper();
String json = objectMapper.writeValueAsString(car)
【讨论】：
【参考方案5】：问题应该是您的 JSON 和 POJO 之间的destinationAddress 和refundAddress 不匹配。 尝试像这样更改您的 JSON：
"depositHotel": "xxx",
"destinationHotel": "aaa",
"depositHotelAmount": "0.2",
"destinationHotelAmount": "4",
"destinationAddress":
"address": "asdf",
"tag": ""
,
"refundAddress":
"address": "pio",
"tag": ""
如果您不想更改 JSON，请将 Builder POJO 更改为使用 Address[] 而不是 Address 对象。
【讨论】：
【参考方案6】：您需要使用 ObjectMapper 将 POJO 转换为 JSONObject 或包含 json dependency
<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20180130</version> </dependency>
【讨论】：
【参考方案7】：您的destinationAddress 和refundAddress 在JSON 中作为地址列表或地址数组传递，而在HotelswitchHotelOrderRequestBody 中您的destinationAddress 和refundAddress 被称为单个地址元素。更新您的 pojo 或 JSON，然后重试。这可能是个问题。
【讨论】：
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