- 下载jdk ， tar格式或rpm格式
- 安装
rpm -Uvh jdk_your_version_.rpm # 安装java 配置环境变量， vim /etc/profile.d/java.sh
export JAVA_HOME=/usr/java/jdk1.8.0_271-amd64/
export JRE_HOME=/usr/java/jdk1.8.0_271-amd64/jre
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATHc中的char和java中的byte
在C中，char是基础数据类型，8位，1个字节。byte不是基础数据类型，一般是typedef unsigned char byte;这样子的，也就是说，byte其实是unsigned char类型，那么也是8位，1个字节。不同的是，char可以表示的范围是-128-127，而byte可以表示的范围是0-255。
在java中，char和byte都是基础数据类型，其中的byte和C中的char类型是一样的，8位，1个字节，-128-127。但是，char类型，是16位，2个字节
Logback configuration error detected
原因： spring-boot-starter-web包的时候他里面默认使用了logback日志，这样就会产生日志包的冲突，其实不只是starter-web包默认引入的logback还有很多的包默认引入的logback包
解决： 需要把 spring-boot-starter-web 放到pom文件中依赖的第一位，在向下执行的时候也会排除所有的默认logger了 。
maven发布的项目打包jsp
从eslipse迁移的Web项目的jsp、js、css等文件都是放到WebContent里，而Maven中，这些文件是放到webapp下的。所以，如果你直接用Maven进行install也就是打包的时候，你的页面相关的文件不会被打包进去，你会发现打好的war包里只有src下的.class文件和一些配置文件。那么如何将页面等文件也包含进去呢？
<build>
<finalName>projectName</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.3</version>
<configuration>
<!--指定web.xml文件的位置-->
<webXml>WebContent/WEB-INF/web.xml</webXml>
<!--指定jsp等文件所在位置-->
<warSourceDirectory>WebContent</warSourceDirectory>
</configuration>
</plugin>
</plugins>
</build>validatorUtil 工具类校验fastjson转对象的参数
- 工具类
import org.hibernate.validator.HibernateValidator;
import javax.validation.ConstraintViolation;
import javax.validation.Validator;
import javax.validation.Validation;
import java.util.Set;
public class ValidatorUtil {
/**
* 开启快速结束模式 failFast (true)
*/
private static final Validator validator = Validation.byProvider(HibernateValidator.class).configure().failFast(false).buildValidatorFactory().getValidator();
/**
* 校验对象
*
* @param t bean
* @param groups 校验组
* @return ValidResult
*/
public static <T> ValidResult validateBean(T t, Class<?>...groups) {
ValidResult result = new ValidResult();
Set<ConstraintViolation<T>> violationSet = validator.validate(t,groups);
boolean hasError = violationSet != null && violationSet.size() > 0;
result.setHasErrors(hasError);
if (hasError) {
for (ConstraintViolation<T> violation : violationSet) {
result.addError(violation.getPropertyPath().toString(), violation.getMessage());
}
}
return result;
}
/**
* 校验bean的某一个属性
*
* @param obj bean
* @param propertyName 属性名称
* @return ValidResult
*/
public static <T> ValidResult validateProperty(T obj, String propertyName) {
ValidResult result = new ValidResult();
Set<ConstraintViolation<T>> violationSet = validator.validateProperty(obj, propertyName);
boolean hasError = violationSet != null && violationSet.size() > 0;
result.setHasErrors(hasError);
if (hasError) {
for (ConstraintViolation<T> violation : violationSet) {
result.addError(propertyName, violation.getMessage());
}
}
return result;
}
}2. ValidResult 校验结果类
import java.util.ArrayList;
import java.util.List;
public class ValidResult {
/**
* 是否有错误
*/
private boolean hasErrors;
/**
* 错误信息
*/
private final List<ValidErrorMessage> errors;
public ValidResult() {
this.errors = new ArrayList<>();
}
public boolean hasErrors() {
return hasErrors;
}
public void setHasErrors(boolean hasErrors) {
this.hasErrors = hasErrors;
}
/**
* 获取所有验证信息
* @return 集合形式
*/
public List<ValidErrorMessage> getAllErrors() {
return errors;
}
/**
* 获取所有验证信息
* @return 字符串形式
*/
public String getErrors(){
StringBuilder sb = new StringBuilder();
for (ValidErrorMessage error : errors) {
sb.append(error.getPropertyPath()).append(":").append(error.getMessage()).append(" ");
}
return sb.toString();
}
public void addError(String propertyName, String message) {
this.errors.add(new ValidErrorMessage(propertyName, message));
}
}3. 错误类
public class ValidErrorMessage {
private String propertyPath;
private String message;
public String getPropertyPath() {
return propertyPath;
}
public void setPropertyPath(String propertyPath) {
this.propertyPath = propertyPath;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public ValidErrorMessage() {
}
public ValidErrorMessage(String propertyPath, String message) {
this.propertyPath = propertyPath;
this.message = message;
}
}4. 校验类
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotEmpty;
public class CheckDataUpdateTimeJson {
@NotBlank(message = "token不能为空!")
private String token;
public void setToken(String token) {
this.token = token;
}
public String getToken() {
return token;
}
}5. 使用
String requestJson = HelperUtils.convertStreamToString(request.getInputStream());
CheckDataUpdateTimeJson paramJson = JSON.parseObject(requestJson, CheckDataUpdateTimeJson.class);
ValidResult validResult = ValidatorUtil.validateBean(paramJson);
if (validResult.hasErrors()) {
System.out.println(validResult.getErrors());
}Spring 添加 Hibernate Validator支持 Add a provider like Hibernate Validator (RI) to your classpath
- 添加依赖
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.1.2.Final</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator-annotation-processor</artifactId>
<version>6.1.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator-cdi</artifactId>
<version>6.1.2.Final</version>
</dependency>
<dependency>
<groupId>jakarta.validation</groupId>
<artifactId>jakarta.validation-api</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>org.jboss.logging</groupId>
<artifactId>jboss-logging</artifactId>
<version>3.4.1.Final</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>jakarta.el</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0.1</version>
<scope>provided</scope>
</dependency>2. 向容器里注册一个处理器：
@Configuration
@EnableWebMvc
public class WebRootConfig {
@Bean
public MethodValidationPostProcessor methodValidationPostProcessor() {
return new MethodValidationPostProcessor();
}
}3. 增加验证类
public class AppLoginParam {
@NotNull(message = "userName不能为空")
private String userName;
@NotNull(message = "password不能为空")
private String password;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}4. Controller增加验证
@RequestMapping("/login")
@ResponseBody
public AjaxJson login(@Valid @RequestBody AppLoginParam requestParam, BindingResult bindingResult) {
AjaxJson res = new AjaxJson();
Integer code = response.getStatus();
res.setCode(String.valueOf(code));
res.setStatus(false);
// validator 验证
if (bindingResult.hasErrors()) {
res.setMessage(bindingResult.getFieldError().getDefaultMessage());
return res;
}
// do something....
}spring的bean在多线程中注入的问题
问题描述
在spring中，如果需要在异步线程中注入bean，会发现bean是空的情况。原因据说是spring bean 出于线程安全考虑，不得注入bean至线程类（Runnable）。
代码如下：
public class DealThreadTask implements Runnable{
@Autowired
private DealService dealService;
@Override
public void run() {
// DealService dealService=holder.getBean("dealService");
System.out.println("dealService-->"+dealService);
dealService.deal("andy", "李琳", 100d);
}
}说明spring在DealThreadTask中未能将dealService注入进去。
解决方法
Spring API 中有ApplicationContextAware 这个接口，实现了这个接口的类，可以在容器初始化完成中获得容器，从而可以获得容器中所有的bean。
public class ApplicationContextHolder implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
ApplicationContextHolder.applicationContext=applicationContext;
System.out.println("applicationContext---->"+applicationContext);
}
public static <T> T getBean(Class<T> clazz){
return applicationContext.getBean(clazz);
}
public static Object getBean(String name) {
if (applicationContext==null) {
System.out.println("applicationContext为空");
}
return applicationContext.getBean(name);
}
}然后，在xml配置文件中，需要将这个类配置进去。
<bean id="applicationContextHolder" class="com.test.spring.tx.multi.ApplicationContextHolder"></bean>这样，在异步线程中的DealThreadTask 中，通过手动的applicationContextHolder的getBean方法，就可以获取所需要的bean。
public class DealThreadTask implements Runnable{
@Autowired
private ApplicationContextHolder holder;
@Override
public void run() {
DealService dealService=holder.getBean("dealService");
System.out.println("dealService-->"+dealService);
dealService.deal("andy", "李琳", 100d);
}
}补充：Spring中出现：No bean named ‘XXX’ available问题解决
注解如果没有指定bean的名字，默认为小写开头的类名。例如类名是ProvincialServiceImpl，则spring返回provincialServiceImpl的bean名。
Idea如何设置代码超出长度限制时自动换行
在【File】–>【Settings】–>【Code Sytle】中勾选【Wrap on typing】选项
maven打包依赖到lib目录
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>target/lib</outputDirectory>
<excludeTransitive>false</excludeTransitive>
<stripVersion>true</stripVersion>
</configuration>
</execution>
</executions>
</plugin>
<!--java代码打包插件，不会将依赖也打包-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
</plugin>
</plugins>
</build>在类路径或引导类路径中找不到程序包 java.lang
这是在基于 maven 编写java项目的时候，使用 mvn install 时发生的异常，异常信息如下
[源文件的搜索路径: /Users/Frank/workspace-java/project/app-web/src/main/java,/Users/Frank/workspace-java/project/app-web/target/generated-sources/annotations] [类文件的搜索路径: /Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/rt.jar;/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/jce.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/cldrdata.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/dnsns.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/jaccess.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/jfxrt.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/localedata.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/nashorn.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/sunec.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/ext/zipfs.jar,/System/Library/Java/Extensions/MRJToolkit.jar,/Users/Frank/workspace-java/projects/app-web/target/classes,/Users/Frank/workspace-java/hnProjects/app-configs/target/app-configs-1.0-SNAPSHOT.jar,/Users/Frank/workspace-java/hnProjects/app-utils/target/app-utils-1.0-SNAPSHOT.jar,/Users/Frank/.m2/repository/org/apache/commons/commons-lang3/3.3.2/commons-lang3-3.3.2.jar,/Users/Frank/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar,/Users/Frank/.m2/repository/commons-codec/commons-codec/1.9/commons-codec-1.9.jar,/Users/Frank/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar,/Users/Frank/.m2/repository/org/apache/httpcomponents/httpclient/4.3.6/httpclient-4.3.6.jar,/Users/Frank/.m2/repository/org/apache/httpcomponents/httpcore/4.3.3/httpcore-4.3.3.jar,/Users/Frank/.m2/repository/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar,/Users/Frank/.m2/repository/commons-beanutils/commons-beanutils/1.9.2/commons-beanutils-1.9.2.jar,/Users/Frank/.m2/repository/org/apache/ant/ant/1.9.4/ant-1.9.4.jar,/Users/Frank/.m2/repository/org/apache/ant/ant-launcher/1.9.4/ant-launcher-1.9.4.jar,/Users/Frank/.m2/repository/net/sf/json-lib/json-lib/2.4/json-lib-2.4-jdk15.jar,/Users/Frank/.m2/repository/commons-lang/commons-lang/2.5/commons-lang-2.5.jar,/Users/Frank/.m2/repository/net/sf/ezmorph/ezmorph/1.0.6/ezmorph-1.0.6.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/junrar-0.7.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/commons-logging-api-1.1.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/commons-vfs2-2.0.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/commons-logging-1.1.1.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/maven-scm-api-1.4.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/plexus-utils-1.5.6.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/maven-scm-provider-svnexe-1.4.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/maven-scm-provider-svn-commons-1.4.jar,/Users/Frank/.m2/repository/com/github/junrar/junrar/0.7/regexp-1.3.jar,/Users/Frank/.m2/repository/commons-logging/commons-logging-api/1.1/commons-logging-api-1.1.jar,/Users/Frank/.m2/repository/org/apache/commons/commons-vfs2/2.0/commons-vfs2-2.0.jar,/Users/Frank/.m2/repository/org/apache/maven/scm/maven-scm-api/1.4/maven-scm-api-1.4.jar,/Users/Frank/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.6/plexus-utils-1.5.6.jar,/Users/Frank/.m2/repository/org/apache/maven/scm/maven-scm-provider-svnexe/1.4/maven-scm-provider-svnexe-1.4.jar,/Users/Frank/.m2/repository/org/apache/maven/scm/maven-scm-provider-svn-commons/1.4/maven-scm-provider-svn-commons-1.4.jar,/Users/Frank/.m2/repository/regexp/regexp/1.3/regexp-1.3.jar,/Users/Frank/.m2/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar,/Users/Frank/.m2/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar,/Users/Frank/.m2/repository/org/jsoup/jsoup/1.8.1/jsoup-1.8.1.jar,/Users/Frank/.m2/repository/commons-fileupload/commons-fileupload/1.3.1/commons-fileupload-1.3.1.jar,/Users/Frank/.m2/repository/commons-io/commons-io/2.4/commons-io-2.4.jar,/Users/Frank/.m2/repository/joda-time/joda-time/2.6/joda-time-2.6.jar,/Users/Frank/.m2/repository/com/google/code/gson/gson/2.3.1/gson-2.3.1.jar,/Users/Frank/.m2/repository/com/google/guava/guava/18.0/guava-18.0.jar,/Users/Frank/.m2/repository/com/googlecode/xmemcached/xmemcached/2.0.0/xmemcached-2.0.0.jar,/Users/Frank/.m2/repository/javax/mail/mail/1.4.1/mail-1.4.1.jar,/Users/Frank/.m2/repository/javax/mail/mail/1.4.1/activation.jar,/Users/Frank/.m2/repository/javax/activation/activation/1.1/activation-1.1.jar,/Users/Frank/.m2/repository/com/belerweb/pinyin4j/2.5.0/pinyin4j-2.5.0.jar,/Users/Frank/.m2/repository/org/jdom/jdom/2.0.2/jdom-2.0.2.jar,/Users/Frank/.m2/repository/org/apache/poi/poi-scratchpad/3.10.1/poi-scratchpad-3.10.1.jar,/Users/Frank/.m2/repository/org/apache/poi/poi/3.11/poi-3.11.jar,/Users/Frank/.m2/repository/org/springframework/spring-core/4.1.4.RELEASE/spring-core-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-context/4.1.4.RELEASE/spring-context-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-aop/4.1.4.RELEASE/spring-aop-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar,/Users/Frank/.m2/repository/org/springframework/spring-beans/4.1.4.RELEASE/spring-beans-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-expression/4.1.4.RELEASE/spring-expression-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-context-support/4.1.4.RELEASE/spring-context-support-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-webmvc/4.1.4.RELEASE/spring-webmvc-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-web/4.1.4.RELEASE/spring-web-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-jdbc/4.1.4.RELEASE/spring-jdbc-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-tx/4.1.4.RELEASE/spring-tx-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/springframework/spring-orm/4.1.4.RELEASE/spring-orm-4.1.4.RELEASE.jar,/Users/Frank/.m2/repository/org/aspectj/aspectjweaver/1.8.4/aspectjweaver-1.8.4.jar,/Users/Frank/.m2/repository/org/hibernate/hibernate-core/4.3.7.Final/hibernate-core-4.3.7.Final.jar,/Users/Frank/.m2/repository/org/jboss/logging/jboss-logging/3.1.3.GA/jboss-logging-3.1.3.GA.jar,/Users/Frank/.m2/repository/org/jboss/logging/jboss-logging-annotations/1.2.0.Beta1/jboss-logging-annotations-1.2.0.Beta1.jar,/Users/Frank/.m2/repository/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.0.0.Final/jboss-transaction-api_1.2_spec-1.0.0.Final.jar,/Users/Frank/.m2/repository/org/hibernate/common/hibernate-commons-annotations/4.0.5.Final/hibernate-commons-annotations-4.0.5.Final.jar,/Users/Frank/.m2/repository/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Final/hibernate-jpa-2.1-api-1.0.0.Final.jar,/Users/Frank/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar,/Users/Frank/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar,/Users/Frank/.m2/repository/org/jboss/jandex/1.1.0.Final/jandex-1.1.0.Final.jar,/Users/Frank/.m2/repository/org/hibernate/hibernate-entitymanager/4.3.7.Final/hibernate-entitymanager-4.3.7.Final.jar,/Users/Frank/.m2/repository/org/hibernate/hibernate-ehcache/4.3.7.Final/hibernate-ehcache-4.3.7.Final.jar,/Users/Frank/.m2/repository/org/hibernate/hibernate-validator/5.1.3.Final/hibernate-validator-5.1.3.Final.jar,/Users/Frank/.m2/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar,/Users/Frank/.m2/repository/com/fasterxml/classmate/1.0.0/classmate-1.0.0.jar,/Users/Frank/.m2/repository/org/freemarker/freemarker/2.3.21/freemarker-2.3.21.jar,/Users/Frank/.m2/repository/net/sf/ehcache/ehcache-core/2.6.10/ehcache-core-2.6.10.jar,/Users/Frank/.m2/repository/com/alibaba/fastjson/1.2.4/fastjson-1.2.4.jar,/Users/Frank/.m2/repository/com/alibaba/druid/1.0.12/druid-1.0.12.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/../lib/jconsole.jar,/Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/../lib/tools.jar,/Users/Frank/.m2/repository/mysql/mysql-connector-java/5.1.34/mysql-connector-java-5.1.34.jar,/Users/Frank/.m2/repository/com/microsoft/sqlserver/sqljdbc4/4.0/sqljdbc4-4.0.jar,/Users/Frank/.m2/repository/org/slf4j/slf4j-api/1.7.9/slf4j-api-1.7.9.jar,/Users/Frank/workspace-java/hnProjects/app-dao/target/app-dao-1.0-SNAPSHOT.jar,/Users/Frank/workspace-java/hnProjects/app-service/target/app-service-1.0-SNAPSHOT.jar,/Users/Frank/.m2/repository/javax/servlet/jsp/jstl/javax.servlet.jsp.jstl-api/1.2.1/javax.servlet.jsp.jstl-api-1.2.1.jar,/Users/Frank/.m2/repository/javax/el/javax.el-api/2.2.4/javax.el-api-2.2.4.jar,/Users/Frank/.m2/repository/javax/servlet/javax.servlet-api/3.1.0/javax.servlet-api-3.1.0.jar,/Users/Frank/.m2/repository/javax/servlet/jsp/javax.servlet.jsp-api/2.3.1/javax.servlet.jsp-api-2.3.1.jar,.] 致命错误: 在类路径或引导类路径中找不到程序包 java.lang [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] An unknown compilation problem occurred [INFO] 1 error [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] Projects :: APP :: Parent ........................... SUCCESS [ 0.357 s] [INFO] Projects :: APP :: Utils ............................ SUCCESS [ 1.257 s] [INFO] Projects :: APP :: Configs .......................... SUCCESS [ 0.374 s] [INFO] Projects :: APP :: Dao .............................. SUCCESS [ 0.172 s] [INFO] Projects :: APP :: Service .......................... SUCCESS [ 0.152 s] [INFO] Projects :: APP :: Admin ............................ SUCCESS [ 1.273 s] [INFO] Projects :: APP :: Web .............................. FAILURE [ 0.081 s] [INFO] xxx ................................................. SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 5.426 s [INFO] Finished at: 2016-07-22T21:26:15+08:00 [INFO] Final Memory: 39M/310M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project app-web: Compilation failure [ERROR] An unknown compilation problem occurred [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 [ERROR] [ERROR] After correcting the problems, you can resume the build with the command [ERROR] mvn -rf :app-web 原因
原因在于 compiler 插件的配置。
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId> <version>${maven.compiler.version}</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target> <encoding>${project.build.sourceEncoding}</encoding> <showWarnings>true</showWarnings>
<compilerArguments>
<verbose />
<!-- 这个配置很特殊：windows下使用分号（;）分隔，linux/mac下使用冒号（:）分隔 --> <bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath> </compilerArguments>
</configuration>
</plugin> <!-- ... --> 配置中14行的分隔符问题，在windows下使配置中分隔符问题，在windows下使用maven 应该使用分号（;）分隔，linux/mac 下使用（:）分隔。