throws

Javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: Failure in SSL library, usually a protocol error

匿名 (未验证) 提交于 2019-12-03 01:32:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am trying to run the following code in android URLConnection l_connection = null; // Create connection uzip=new UnZipData(mContext); l_url = new URL(serverurl); if ("https".equals(l_url.getProtocol())) { System.out.println(">>>>>>>>>>>"); sslcontext = SSLContext.getInstance("TLS"); System.out.println(">>>>>>>>>>>"); sslcontext.init(null, new TrustManager[] { new CustomTrustManager()}, new java.security.SecureRandom()); HttpsURLConnection .setDefaultHostnameVerifier(new CustomHostnameVerifier()); HttpsURLConnection

Elasticsearch Rest Client throws java.lang.ArrayStoreException

匿名 (未验证) 提交于 2019-12-03 01:23:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am using Elasticsearch Rest Client v5.5.3 to execute Elasticsearch queries in a Java application. It always throws java.lang.ArrayStoreException. First I suspect frequency of query execution since application intensively executes queries but it throws exception very first query. Second I update some dependencies like Apache HttpCore.jar which Elasticsearch rest client uses. But either way I could not figure out how to solve it still throws exception. Stack trace is below; java.lang.ArrayStoreException: org.apache.http.impl.cookie

Custom Authentication provider with Spring Security and Java Config

匿名 (未验证) 提交于 2019-12-03 01:14:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: How can I define a custom Authentication provider by using Spring Security with Java Configurations? I would like to perform a login checking credentials on my own database. 回答1: The following does what you need ( CustomAuthenticationProvider is your implementation which needs to be managed by Spring) @Configuration @EnableWebMvcSecurity public class WebSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private CustomAuthenticationProvider customAuthenticationProvider; @Override protected void configure(HttpSecurity http)

Difference between Throws in method signature and Throw Statements in Java

流过昼夜 提交于 2019-12-03 00:55:04
问题 I am trying to make it clear of the difference between Throws in method signature and Throw Statements in Java. Throws in method signature is as following: public void aMethod() throws IOException{ FileReader f = new FileReader("notExist.txt"); } Throw Statements is as following: public void bMethod() { throw new IOException(); } From my understanding, a throws in method signature is a notification that the method may throw such an exception. throw statement is what actually throw a created

Is there a throws keyword in C# like in Java? [duplicate]

感情迁移 提交于 2019-12-03 00:52:31
This question already has answers here : How to use Java-style throws keyword in C#? (8 answers) Possible Duplicate: how to use Java-style throws keyword in C#? i have a function where an exception occurs say for example private void functionName() throws Exception { // some code that might throw an exception } thanks! No, because there are no checked exceptions in C# If you are trying to document exceptions that are thrown, use the standard xml documentation /// <exception cref="InvalidOperationException">Why it's thrown.</exception> No. There is no such construct in c#. But you can add the

基于oauth2的password授权模式

匿名 (未验证) 提交于 2019-12-03 00:39:02
第一次分享博客,大神勿喷,多多指教! 前 不久研究了一下oauth2框架的各种模式,今天主要分享一下password模式。 做完有一段时间,记忆不是很犹新,简单讲一下我理解的原理。事例写在两个项目里最下面有git连接,开箱即用 讲一下我理解的原理,很多client可能都需要访问我的很多resource,这时候我们需要通过oauthserver负责验证client信息,赋给client访问resource权限,然后再通过jwt生成token给用户个人权限,用户拿着这个token去访问我们的resource就可以了.两个demo很多东西还没完善,都是写死的,根据需求自己改就好了,可以全部写在一个项目里,但是不建议,那样感觉失去意义,provider用的是sercurity提供的小界面,可以自定义,或者提供接口给client,根据业务需求吧。 附上简单的架构图 废话不多说了上代码: oauthserver: @Configuration @EnableAuthorizationServer public class OauthServerConfig extends AuthorizationServerConfigurerAdapter { @Autowired private AuthenticationManager authenticationManager ; @Bean

SpringBoot2.0.3 + SpringSecurity5.0.6 + vue 前后端分离认证授权

匿名 (未验证) 提交于 2019-12-03 00:38:01
  新项目引入安全控制   项目中新近添加了Spring Security安全组件,前期没怎么用过,加之新版本少有参考,踩坑四天,终完成初步解决方案.其实很简单,Spring Security5相比之前版本少了许多配置,操作起来更轻量   MariaDb登录配置加密策略   SpringSecurity5在执行登录认证时,需预设加密策略.   坑一:加密策略配置,验密始终不通过,报错401   坑二:本地重写的UserDetailsService实现类在注入的时候找不到,目前图省事直接用了 @Qualifier制定   其它,实体类user实现UserDetails,role实现GrantedAuthority与之前版本并有太大变动,可参考很多,不做赘述   代码如下:     /** * 项目中重写的 UserDetailsService接口的实现类,需指定 */ @Qualifier( "userService" ) @Autowired private UserDetailsService userDetailsService; /** * 初始验证登录 从内存中取密码 * @param auth * @throws Exception */ @Autowired public void configureGlobal(AuthenticationManagerBuilder

SpringBoot2.0.3 + SpringSecurity5.0.6 + vue 前后端分离认证授权

匿名 (未验证) 提交于 2019-12-03 00:37:01
  新项目引入安全控制   项目中新近添加了Spring Security安全组件,前期没怎么用过,加之新版本少有参考,踩坑四天,终完成初步解决方案.其实很简单,Spring Security5相比之前版本少了许多配置,操作起来更轻量   MariaDb登录配置加密策略   SpringSecurity5在执行登录认证时,需预设加密策略.   坑一:加密策略配置,验密始终不通过,报错401   坑二:本地重写的UserDetailsService实现类在注入的时候找不到,目前图省事直接用了 @Qualifier制定   其它,实体类user实现UserDetails,role实现GrantedAuthority与之前版本并有太大变动,可参考很多,不做赘述   代码如下:     /** * 项目中重写的 UserDetailsService接口的实现类,需指定 */ @Qualifier( "userService" ) @Autowired private UserDetailsService userDetailsService; /** * 初始验证登录 从内存中取密码 * @param auth * @throws Exception */ @Autowired public void configureGlobal(AuthenticationManagerBuilder

servlet线程安全问题

匿名 (未验证) 提交于 2019-12-03 00:17:01
1、 像这样的话i每次打印结果就是1,2,3...递增的了,因为这个是覆盖HttpServlet而实现的类,而且servlet类只会创建一个对象。那么可以说每次访问都用的同一个对象,而且i只有刚创建对象的时候才初始化。所以这个时候就是这个结果・ 此外,线程安全问题就是对一些类的静态变量(static修饰),因为每一个类刚开始使用之前就会被加载到内存中,之后如果程序不结束类就一直在内存中,那么每一次创建对象都是都不会重新加载类。那么static变量也是只会执行初始化代码一次 2、 正确的解决方法: 抛出异常: 一下来源于: 脚本之家 1 //1、系统自动抛出异常 2 public static void main(String[] args) { 3 int a = 5; 4 int b = 0; 5 System.out.println( a / b); 6 } 7 //运行结果,系统会自动抛出ArithmeticException异常Exception in thread "main" java.lang.ArithmeticException: / by zero 8 // at io.renren.modules.sys.controller.SysUserController.main(SysUserController.java:154) 9 10 //2

java—基础—异常、

旧时模样 提交于 2019-12-03 00:09:35
一、异常 Java异常处理的五个关键字:try、catch、finally、throw、throws 1.抛出异常throw /* 1.throw用在方法内,用来抛出一个异常对象,将这个异常对象传递到调用者处,并结束当前方法的执行。 2.使用格式:throw new 异常类名(参数); 例:throw new ArrayIndexOutOfBoundsException("该索引在数组中不存在,已超出范围"); */ 2.声明异常throws /* 1.声明异常:将问题标识出来,报告给调用者。如果方法内通过throw抛出了编译时异常,而没有捕获处理(稍后讲 解该方式),那么必须通过throws进行声明,让调用者去处理。 2.关键字throws运用于方法声明之上,用于表示当前方法不处理异常,而是提醒该方法的调用者来处理异常(抛出异常). 3.声明异常格式:修饰符 返回值类型 方法名(参数) throws 异常类名1,异常类名2…{ } */ public class Test { public static void main(String[] args) throws ArrayIndexOutOfBoundsException{ int[] arr = {1,2,3}; Test(arr,3); } public static void Test (int[] arr,int