当它抱怨的类似乎显然可用时，为什么我的mvn clean install命令告诉我它找不到符号？
我正在建立一个处理对REST api（HP ALM）的调用的库。它返回xml，因此我必须解析结果。
该库已经完成很多工作，但是现在我想在一个更大的gui应用程序中对其进行测试，因此我需要构建.jar并将其安装到本地maven存储库中。库开发期间没有任何（相关）错误。
这是运行mvn clean install时遇到的错误
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building rest-qc 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ rest-qc ---
[INFO] Deleting C:\Data\workspaces\MRPB\workspace\rest-qc\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ rest-qc ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ rest-qc ---
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 27 source files to C:\Data\workspaces\MRPB\workspace\rest-qc\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] \Data\workspaces\MRPB\workspace\rest-qc\src\main\java\infrastructure\Entity.java:[172,2] error: cannot find symbol
[ERROR] \Data\workspaces\MRPB\workspace\rest-qc\src\main\java\infrastructure\Entity.java:[173,2] error: cannot find symbol
[INFO] 2 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.400 s
[INFO] Finished at: 2016-08-26T10:32:32+02:00
[INFO] Final Memory: 10M/123M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project rest-qc: Compilation failure: Compilati
on failure:
[ERROR] \Data\workspaces\MRPB\workspace\rest-qc\src\main\java\infrastructure\Entity.java:[172,2] error: cannot find symbol
[ERROR] \Data\workspaces\MRPB\workspace\rest-qc\src\main\java\infrastructure\Entity.java:[173,2] error: cannot find symbol
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
现在，我了解到编译器插件2.3.2可能存在错误，因此我尝试了该插件的其他多个版本。这是3.1的响应：
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building rest-qc 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ rest-qc ---
[INFO] Deleting C:\Data\workspaces\MRPB\workspace\rest-qc\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ rest-qc ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ rest-qc ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 27 source files to C:\Data\workspaces\MRPB\workspace\rest-qc\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /C:/Data/workspaces/MRPB/workspace/rest-qc/src/main/java/infrastructure/Entity.java:[172,10] cannot find symbol
symbol: class XmlAccessorType
location: class infrastructure.Entity
[ERROR] /C:/Data/workspaces/MRPB/workspace/rest-qc/src/main/java/infrastructure/Entity.java:[173,10] cannot find symbol
symbol: class XmlType
location: class infrastructure.Entity
[INFO] 2 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.668 s
[INFO] Finished at: 2016-08-26T10:32:14+02:00
[INFO] Final Memory: 13M/163M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project rest-qc: Compilation failure: Compilation
failure:
[ERROR] /C:/Data/workspaces/MRPB/workspace/rest-qc/src/main/java/infrastructure/Entity.java:[172,10] cannot find symbol
[ERROR] symbol: class XmlAccessorType
[ERROR] location: class infrastructure.Entity
[ERROR] /C:/Data/workspaces/MRPB/workspace/rest-qc/src/main/java/infrastructure/Entity.java:[173,10] cannot find symbol
[ERROR] symbol: class XmlType
[ERROR] location: class infrastructure.Entity
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
它们都给出几乎相同的错误。 3.1具有与2.3.2相同的行号，但是字符索引的范围是2-> 10。另外，3.1专门指出导致错误的类。
Entity类是标准生成的类，用于解释REST调用的结果。所有结果对象将以实体格式显示。供参考，这是我的pom.xml。我已经手动检查了jaxb-bind依赖项jar，以检查relevand注释类是否在库中。是的。
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>sdc.qualitycenter</groupId>
<artifactId>rest-qc</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.19.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.4</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
最后但并非最不重要的是，实体类（我已经手动添加了toString方法）
package infrastructure;
/*
This file was generated by the JavaTM Architecture for XML Binding(JAXB)
Reference Implementation, vhudson-jaxb-ri-2.1-456
See http://www.oracle.com/technetwork/articles/javase/index-140168.html
Any modifications to this file will be lost upon recompilation of the source schema.
This example of an automatically generated class is an example of how one can
generate classes from XSDs via xjc to match jaxb standards.
XSD is a format for describing a class structure
(note: the CLASS not an INSTANCE of the class).
From an XSD one can generate a class java source file.
When compiling this source file, one can "marshal" an actual object instance
from the XML describing the object (this time we are talking about an instance,
not a class).
this process has many advantages, and is a form of serialization that is not
language dependent.
This is the recommended way of working with entities, though we do suggest you
customize your entity class with simpler accessors.
*/
import infrastructure.Entity.Fields.Field;
import javax.xml.bind.annotation.*;
import java.util.ArrayList;
import java.util.List;
/**
* Java class for anonymous complex type.
*
* The following schema fragment specifies the expected content contained within this class.
*
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Fields">
* <complexType>
* <complexContent>
* <restriction base=
* "{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Field" maxOccurs="unbounded">
* <complexType>
* <complexContent>
* <restriction base=
* "{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Value"
* type="{http://www.w3.org/2001/XMLSchema}string"
* maxOccurs="unbounded"/>
* </sequence>
* <attribute name="Name" use="required"
* type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* <attribute name="Type" use="required"
* type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = { "fields" })
@XmlRootElement(name = "Entity")
public class Entity {
@XmlElement(name = "Fields", required = true)
protected Entity.Fields fields;
@XmlAttribute(name = "Type", required = true)
protected String type;
public Entity(Entity entity) {
type = entity.getType();
fields = new Entity.Fields(entity.getFields());
}
public Entity() {}
/**
* Gets the value of the fields property.
*
* @return possible object is {@link Entity.Fields }
*
*/
public Entity.Fields getFields() {
return fields;
}
/**
* Sets the value of the fields property.
*
* @param value
* allowed object is {@link Entity.Fields }
*
*/
public void setFields(Entity.Fields value) {
this.fields = value;
}
/**
* Gets the value of the type property.
*
* @return possible object is {@link String }
*
*/
public String getType() {
return type;
}
/**
* Sets the value of the type property.
*
* @param value
* allowed object is {@link String }
*
*/
public void setType(String value) {
this.type = value;
}
/**
* Java class for anonymous complex type.
*
* The following schema fragment specifies the expected content contained within this class.
*
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Field" maxOccurs="unbounded">
* <complexType>
* <complexContent>
* <restriction base=
* "{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Value"
* type="{http://www.w3.org/2001/XMLSchema}string"
* maxOccurs="unbounded"/>
* </sequence>
* <attribute name="Name" use="required"
* type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = { "field" })
public static class Fields {
@XmlElement(name = "Field", required = true)
protected List<Field> field;
public Fields(Fields fields) {
field = new ArrayList<Field>(fields.getField());
}
public Fields() {}
/**
* Gets the value of the field property.
*
* This accessor method returns a reference to the live list, not a snapshot.
* Therefore any modification you make to the returned list will be present
* inside the JAXB object.
* This is why there is no set method for the field property.
*
* For example, to add a new item, do as follows:
*
* getField().add(newItem);
*
* Objects of the following type(s) are allowed in the list {@link Entity.Fields.Field }
*
*
*/
public List<Field> getField() {
if (field == null) {
field = new ArrayList<Field>();
}
return this.field;
}
/**
* Java class for anonymous complex type.
*
* The following schema fragment specifies the expected content contained
* within this class.
*
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Value"
* type="{http://www.w3.org/2001/XMLSchema}string"
* maxOccurs="unbounded"/>
* </sequence>
* <attribute name="Name" use="required"
* type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = { "value" })
public static class Field {
@XmlElement(name = "Value", required = true)
protected List<String> value;
@XmlAttribute(name = "Name", required = true)
protected String name;
/**
* Gets the value of the value property.
*
* This accessor method returns a reference to the live list, not a snapshot.
* Therefore, any modification you make to the returned list will be present
* inside the JAXB object. This is why there is no set method
* for the value property.
*
* For example, to add a new item, do as follows:
*
* getValue().add(newItem);
*
* Objects of the following type(s) are allowed in the list {@link String }
*
*
*/
public List<String> getValue() {
if (value == null) {
value = new ArrayList<String>();
}
return this.value;
}
/**
* Gets the value of the name property.
*
* @return possible object is {@link String }
*
*/
public String getName() {
return name;
}
/**
* Sets the value of the name property.
*
* @param value
* allowed object is {@link String }
*
*/
public void setName(String value) {
this.name = value;
}
}
}
public String toString(){
StringBuilder sb = new StringBuilder();
sb.append("############## NEW ENTITY ################\n");
List<Field> fields = this.getFields().getField();
for (Field field : fields) {
sb.append(field.getName() + " : " + field.getValue()+"\n");
}
return sb.toString();
}
}
最佳答案
我假设您已将您的版本定义为依赖项
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.1</version>
</dependency>
太旧了。所以我建议使用newer version like
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.2.12</version>
</dependency>