IT修真院·坑乎 | Java(后端),CSS(前端),JavaScript(前端),PM(产品经理),UI(交互设计),QA(测试),Android(安卓APP),iOS(苹果APP),OP(运维),Python(后端)日常在线问答学习平台

该问题已被官方收录

war包部署到服务器，无法获取CSS及图片的静态资源文件

1

tiles

class="cursor-pointer"> 详细描述

该问题已被官方收录

maven clean install 失败

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

des加密之后乱码问题

1

md5/des

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

package com.afreon.util;
 
import java.io.IOException;
import java.security.SecureRandom;
 
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
 
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
 
public class DesUtil {
 
    private final static String DES = "DES";
 
    public static void main(String[] args) throws Exception {
        String data = "123 456";
        String key = "wang!@#$%";
        System.err.println(encrypt(data, key));
        System.err.println(decrypt(encrypt(data, key), key));
 
    }
     
    /**
     * Description 根据键值进行加密
     * @param data 
     * @param key  加密键byte数组
     * @return
     * @throws Exception
     */
    public static String encrypt(String data, String key) throws Exception {
        byte[] bt = encrypt(data.getBytes(), key.getBytes());
        String strs = new BASE64Encoder().encode(bt);
        return strs;
    }
 
    /**
     * Description 根据键值进行解密
     * @param data
     * @param key  加密键byte数组
     * @return
     * @throws IOException
     * @throws Exception
     */
    public static String decrypt(String data, String key) throws IOException,
            Exception {
        if (data == null)
            return null;
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] buf = decoder.decodeBuffer(data);
        byte[] bt = decrypt(buf,key.getBytes());
        return new String(bt);
    }
 
    /**
     * Description 根据键值进行加密
     * @param data
     * @param key  加密键byte数组
     * @return
     * @throws Exception
     */
    private static byte[] encrypt(byte[] data, byte[] key) throws Exception {
        // 生成一个可信任的随机数源
        SecureRandom sr = new SecureRandom();
 
        // 从原始密钥数据创建DESKeySpec对象
        DESKeySpec dks = new DESKeySpec(key);
 
        // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
        SecretKey securekey = keyFactory.generateSecret(dks);
 
        // Cipher对象实际完成加密操作
        Cipher cipher = Cipher.getInstance(DES);
 
        // 用密钥初始化Cipher对象
        cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
 
        return cipher.doFinal(data);
    }
     
     
    /**
     * Description 根据键值进行解密
     * @param data
     * @param key  加密键byte数组
     * @return
     * @throws Exception
     */
    private static byte[] decrypt(byte[] data, byte[] key) throws Exception {
        // 生成一个可信任的随机数源
        SecureRandom sr = new SecureRandom();
 
        // 从原始密钥数据创建DESKeySpec对象
        DESKeySpec dks = new DESKeySpec(key);
 
        // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
        SecretKey securekey = keyFactory.generateSecret(dks);
 
        // Cipher对象实际完成解密操作
        Cipher cipher = Cipher.getInstance(DES);
 
        // 用密钥初始化Cipher对象
        cipher.init(Cipher.DECRYPT_MODE, securekey, sr);
 
        return cipher.doFinal(data);
    }
}

该问题已被官方收录

使用put请求返回json字符串的时候出现中文乱码

1

复盘踩坑

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

springboot2 拦截器无效

1

springboot

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

Config:

import com.example.demo.interceptor.OneInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class InterceptorConfig implements WebMvcConfigurer {

@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new OneInterceptor()).addPathPatterns("/**");
}
}

OneInterceptor:

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class OneInterceptor implements HandlerInterceptor {

private Logger logger = LoggerFactory.getLogger(OneInterceptor.class);

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object object) throws Exception {
    logger.debug("拦截。。。");
    return false;
}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
    System.err.println("post");
}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
    System.err.println("after");
}

该问题已被官方收录

项目报错500，说是读取definitions超时

0

1

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

异常来自 HRESULT:0x80131040

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

使用Tuscany配置的时候，一直报node.start无法启动

1

tuscany

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

<?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/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>zwp</groupId>
  <artifactId>task0801</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
        <!-- log4j日志文件管理包版本 -->
        <slf4j.version>1.7.7</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
        <!-- spring版本号 -->
        <spring.version>3.0.5.RELEASE</spring.version>
        <!-- mybatis版本号 -->
        <mybatis.version>3.4.1</mybatis.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!--<spring.version>5.0.3.RELEASE</spring.version>-->
        <!--<mybatis.version>3.4.4</mybatis.version>-->
    </properties>
    <dependencies>
        <!-- 第一部分：Spring 配置-->
        <!-- Spring core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Spring DAO -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Spring mvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- 第二部分：Servlet web -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <!--<scope>provided</scope>-->
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <!--<scope>provided</scope>-->
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.4</version>
        </dependency>
        <!-- 第三部分：数据库和mybatis -->
        <!-- 数据库 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>
        <!-- 数据库连接池 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!-- MyBatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- mybatis-spring整合包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>


        <!-- 日志文件管理包 -->
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <!-- 格式化对象，方便输出日志 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.41</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->

        <!-- 映入JSON -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

        <!-- JSTL标签类 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>


        <!--AOP-->
        <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.googlecode.xmemcached/xmemcached 2.2-->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.googlecode.xmemcached/xmemcached -->
        <dependency>
            <groupId>com.googlecode.xmemcached</groupId>
            <artifactId>xmemcached</artifactId>
            <version>2.4.0</version>
            <exclusions>
                <exclusion>
                    <artifactId>slf4j-api</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <!-- tuscany -->

        <dependency>
            <groupId>org.apache.tuscany.sca</groupId>
            <artifactId>tuscany-sca-api</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca</groupId>
            <artifactId>tuscany-base-runtime</artifactId>
            <version>2.0.1</version>
            <exclusions>
                <exclusion>
                    <artifactId>cglib</artifactId>
                    <groupId>cglib</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca.aggregation</groupId>
            <artifactId>tuscany-binding-rmi-runtime-aggregation</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca.aggregation</groupId>
            <artifactId>tuscany-binding-ws-runtime-axis2-aggregation</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca</groupId>
            <artifactId>tuscany-implementation-spring-runtime</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca</groupId>
            <artifactId>tuscany-assembly-xml</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tuscany.sca</groupId>
            <artifactId>tuscany-binding-rmi-runtime</artifactId>
            <version>2.0.1</version>
            <scope>runtime</scope>
        </dependency>
    </dependencies>
    <build>
        <finalName>project-8090</finalName>
        <!--<pluginManagement><!– lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) –>-->
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.4.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.client.TestRun</mainClass>
                                </transformer>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.handlers</resource>
                                </transformer>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.schemas</resource>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

        </plugins>
        <!--</pluginManagement>-->
    </build>
</project>





------------------------------------------------------------------我是分隔符-------------------------------------------------------------------------
//启动类
package rmi;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tuscany.sca.node.Node;
import org.apache.tuscany.sca.node.NodeFactory;
import org.springframework.beans.factory.annotation.Autowired;
import service.PaperService;

public class RmiServices {
    private static final Log LOGGER = LogFactory.getLog(RmiServices.class);

    @Autowired
    PaperService paperService ;

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Node node = NodeFactory.newInstance().createNode("Calculator.composite");
        node.start();
        System.out.println("tuscany service2启动");
    }
}

九月 21, 2018 9:52:13 上午 org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl [] (StartException)
严重: Exception during start processing
java.lang.NoClassDefFoundError: org/objectweb/asm/util/TraceClassVisitor
	at net.sf.cglib.core.DebuggingClassWriter.toByteArray(DebuggingClassWriter.java:73)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:26)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
[INFO ] 2018-09-21 09:52:13,169 method:org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1002) Closing org.apache.tuscany.sca.implementation.spring.context.SCAGenericApplicationContext@2807bdeb: startup date [Fri Sep 21 09:52:11 CST 2018]; parent: file:/C:/javaTask/task9/task0901-service2/target/classes/spring/spring-dao.xml
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
	at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
	at org.apache.tuscany.sca.binding.rmi.provider.RMIServiceBindingProvider.createRmiService(RMIServiceBindingProvider.java:108)
	at org.apache.tuscany.sca.binding.rmi.provider.RMIServiceBindingProvider.start(RMIServiceBindingProvider.java:76)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl$2.run(CompositeActivatorImpl.java:566)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.startEndpoint(CompositeActivatorImpl.java:564)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.start(CompositeActivatorImpl.java:422)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.start(CompositeActivatorImpl.java:345)
	at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:149)
	at rmi.RmiServices.main(RmiServices.java:19)
Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.util.TraceClassVisitor
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 17 more

[INFO ] 2018-09-21 09:52:13,172 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:422) Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@4d722ac9: defining beans [PaperService,org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,paperServiceImpl,dataSource,sqlSessionFactory,org.mybatis.spring.mapper.MapperScannerConfigurer#0,transactionManager,paperDao]; parent: org.apache.tuscany.sca.implementation.spring.context.SCAParentApplicationContext@53f0a4cb
Exception in thread "main" java.lang.IllegalStateException: java.lang.NoClassDefFoundError: org/objectweb/asm/util/TraceClassVisitor
	at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:178)
	at rmi.RmiServices.main(RmiServices.java:19)
Caused by: java.lang.NoClassDefFoundError: org/objectweb/asm/util/TraceClassVisitor
	at net.sf.cglib.core.DebuggingClassWriter.toByteArray(DebuggingClassWriter.java:73)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:26)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
	at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
	at org.apache.tuscany.sca.binding.rmi.provider.RMIServiceBindingProvider.createRmiService(RMIServiceBindingProvider.java:108)
	at org.apache.tuscany.sca.binding.rmi.provider.RMIServiceBindingProvider.start(RMIServiceBindingProvider.java:76)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl$2.run(CompositeActivatorImpl.java:566)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.startEndpoint(CompositeActivatorImpl.java:564)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.start(CompositeActivatorImpl.java:422)
	at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl.start(CompositeActivatorImpl.java:345)
	at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:149)
	... 1 more
Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.util.TraceClassVisitor
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 17 more

Process finished with exit code 1

该问题已被官方收录

Spring AOP 和 log4j等日志插件的区别

1

aop

class="cursor-pointer"> 详细描述

该问题已被官方收录

IntelliJ IDEA怎么调教

1

spring maven

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图