Question

我们有一个包含大量unchecked和rawtypes代码的项目。多年来，我们使用Eclipse（我不知道如何？）可以从中编译和构建war文件，但是现在，我们应该使用jenkins，它使用maven，它不能像Eclipse那样跳过这些代码成功。

我创建了一个非常简单的例子来描述我的问题：

的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.cloudbees</groupId>
  <artifactId>traceability</artifactId>
  <packaging>war</packaging>
  <version>1.1-SNAPSHOT</version>
  <name>traceability Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>traceability</finalName>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.3</version>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
          <compilerArgs>
          <compilerArg>-Xlint</compilerArg>
          </compilerArgs>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

MyGenericClass.java

package com.cloudbees.traceability;

public class MyGenericClass<T> implements MyGenericInterface<T>{
@SuppressWarnings("unchecked")
@Override
public T myGenericMethod() {
    // TODO Auto-generated method stub
    return (T)"String";
}
}

MyClass.java（unchecked和rawtypes代码的示例）

package com.cloudbees.traceability;

public class MyClass {
public <T> T myGenericMethod(MyGenericInterface<T> mgi){
    return mgi.myGenericMethod();
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public static String main(){
    MyClass mc = new MyClass();
    MyGenericClass mgc=new MyGenericClass();
    return mc.myGenericMethod(mgc);
}
}

index.jsp（检查Eclipse是否已成功编译成war文件）

<%@page import="com.cloudbees.traceability.MyClass"%>
<html>
<body>
<h2>Hello World!</h2>
<% MyClass mc=new MyClass(); %>
<%=mc.main() %>
</body>
</html>

Eclipse上Debug on server的输出：

Hello World!
String

mvn clean compile的输出：

Dynamic source lookup support loaded.
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building traceability Maven Webapp 1.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ traceability ---
[INFO] Deleting C:\Users\user\workspace\traceability-java-sample\target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ traceability ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\Users\user\workspace\traceability-java-sample\src\main\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ traceability ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 3 source files to C:\Users\user\workspace\traceability-java-sample\target\classes
[INFO] -------------------------------------------------------------
[WARNING] COMPILATION WARNING : 
[INFO] -------------------------------------------------------------
[WARNING] /C:/Users/user/workspace/traceability-java-sample/src/main/java/com/cloudbees/traceability/MyClass.java:[11,35] unchecked conversion
  required: src.main.java.com.cloudbees.traceability.MyGenericInterface<T>
  found:    src.main.java.com.cloudbees.traceability.MyGenericClass
[WARNING] /C:/Users/user/workspace/traceability-java-sample/src/main/java/com/cloudbees/traceability/MyClass.java:[11,34] unchecked method invocation: method myGenericMethod in class src.main.java.com.cloudbees.traceability.MyClass is applied to given types
  required: src.main.java.com.cloudbees.traceability.MyGenericInterface<T>
  found: src.main.java.com.cloudbees.traceability.MyGenericClass
[WARNING] /C:/Users/user/workspace/traceability-java-sample/src/main/java/com/cloudbees/traceability/MyGenericClass.java:[7,19] unchecked cast
  required: T
  found:    java.lang.String
[INFO] 3 warnings 
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/user/workspace/traceability-java-sample/src/main/java/com/cloudbees/traceability/MyClass.java:[11,34] incompatible types
  required: java.lang.String
  found:    java.lang.Object
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.558 s
[INFO] Finished at: 2017-08-02T18:03:45+04:30
[INFO] Final Memory: 12M/222M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project traceability: Compilation failure
[ERROR] /C:/Users/user/workspace/traceability-java-sample/src/main/java/com/cloudbees/traceability/MyClass.java:[11,34] incompatible types
[ERROR] required: java.lang.String
[ERROR] found:    java.lang.Object
[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

如您所见，警告＃2在以后的几行中被引发为错误。我想请求maven跳过并忽略Eclipse这样的代码。

如何跳过`unchecked`错误到Maven成功编译（就像Eclipse那样）？

0 个答案: