java

Is there a way to integrate java bean validation api With Spring RestTemplate

由 ╄→尐↘猪︶ㄣ 提交于 2021-02-19 01:08:50
问题 Is there a way to integrate spring RestTemplate with JavaBean validation api. ? I know there is a integration for spring controller. you can put @Valid on request body param and if Employee is not valid you will get MethodArgumentNotValidException exception . which you can handel in exception handler class. @PostMapping(value = "/add", produces = APPLICATION_JSON_VALUE) public ResponseEntity<String> addEmployee( @RequestBody @Valid Employee emp) { //... } But what I want is similar way to

Is there a way to integrate java bean validation api With Spring RestTemplate

由 旧巷老猫 提交于 2021-02-19 01:07:25
问题 Is there a way to integrate spring RestTemplate with JavaBean validation api. ? I know there is a integration for spring controller. you can put @Valid on request body param and if Employee is not valid you will get MethodArgumentNotValidException exception . which you can handel in exception handler class. @PostMapping(value = "/add", produces = APPLICATION_JSON_VALUE) public ResponseEntity<String> addEmployee( @RequestBody @Valid Employee emp) { //... } But what I want is similar way to

Java & Spark : add unique incremental id to dataset

由 浪尽此生 提交于 2021-02-19 00:47:35
问题 With Spark and Java, I am trying to add to an existing Dataset[Row] with n columns an Integer identify column. I successfully added an id with zipWithUniqueId() or with zipWithIndex , even using monotonically_increasing_id() . But neither one gives satisfaction. Example : I have one dataset with 195 rows. When I use one of these three methods, i get some id like 1584156487 or 12036 . Plus, those id's are not contiguous. What i need/want is rather simply : an Integer id column, which value

How to SuppressWarnings for 'common-java' rules

由 北城余情 提交于 2021-02-19 00:45:29
问题 I need to temporary ignore rule "Insufficient branch coverage by unit tests" (common-java:InsufficientBranchCoverage). Reading http://docs.sonarqube.org/display/SONAR/Frequently+Asked+Questions I see that SuppressWarnings should work for all rules. But any combination of @SuppressWarnings("common-java:InsufficientBranchCoverage") @SuppressWarnings("InsufficientBranchCoverage") @SuppressWarnings("java:InsufficientBranchCoverage") does not work for me. I use Sonar 5.0, Sonar Java plugin 3.0.

How to SuppressWarnings for 'common-java' rules

由 倖福魔咒の 提交于 2021-02-19 00:45:27
问题 I need to temporary ignore rule "Insufficient branch coverage by unit tests" (common-java:InsufficientBranchCoverage). Reading http://docs.sonarqube.org/display/SONAR/Frequently+Asked+Questions I see that SuppressWarnings should work for all rules. But any combination of @SuppressWarnings("common-java:InsufficientBranchCoverage") @SuppressWarnings("InsufficientBranchCoverage") @SuppressWarnings("java:InsufficientBranchCoverage") does not work for me. I use Sonar 5.0, Sonar Java plugin 3.0.

Thread class empty constructor

由 送分小仙女□ 提交于 2021-02-19 00:38:47
问题 I was wondering what's the reasoning of the existance of an empty constructor on Thread class. Since you cant give it a Runnable when it's created, creating a Thread like this: Thread t=new Thread(); Is completely useless. Can you think of a reason why there is not an option of adding a runnable to a thread AFTER CREATION? 回答1: The following works: new Thread() { public void run() { System.out.println("Well you can change the run method."); } } but yes that's not what I'd consider good

Java-Runoob-高级教程-实例-环境设置实例：3.Java 实例

由 ぐ巨炮叔叔 提交于 2021-02-18 23:40:42
ylbtech-Java-Runoob-高级教程-实例-环境设置实例：3.Java 实例 - 如何执行指定class文件目录（classpath）？ 1. 返回顶部 1、 Java 实例 - 如何执行指定class文件目录（classpath） Java 实例 如果我们 Java 编译后的class文件不在当前目录，我们可以使用 -classpath 来 指定class文件目录 ： C:> java -classpath C:\java\DemoClasses HelloWorld 以上命令中我们使用了 -classpath 参数指定了 HelloWorld 的 class 文件所在目录。 如果class文件在jar文件中，则命令如下： c:> java -classpath C:\java\myclasses.jar Java 实例 2、 2. 返回顶部 3. 返回顶部 4. 返回顶部 5. 返回顶部 1、 http://www.runoob.com/java/env-classpath.html 2、 6. 返回顶部 作者： ylbtech 出处： http://ylbtech.cnblogs.com/ 本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。 来源： oschina 链接： https

Android面试题集：以前烂大街的四大组件-Activity，面试重提这些知识点你还记得吗?

由 风流意气都作罢 提交于 2021-02-18 23:15:16
前言 虽然有很多面试的文章里都有这些题目，但是我每次在看的时候，总是会觉得有些分散，复习的时候还要重新去找到对应的文章，所以我就想着自己来整理一下，并且把题目给分一下类型；自己整理可以帮助我复习的同时还可以巩固一遍；这次主要是4大组件相关，后续我会继续整理，觉得有帮助的可以点个赞。 接下来是关于Activity的面试题了： 描述一下Activity 生命周期？ onCreate() Activity第-次被创建的时候调用，一些初始化操作可以在这里完成。 onStart() 这个方法在Activity 由不可见变为可见的时候调用。 onResume() 这个方法在Activity 准备好和用户进行交互的时候调用。此时的Acivity一定位于返回栈的栈顶，并且处于运行状态。 onPause() 这个方法在系统准备去启动或者恢复另-个Activity的时候调用。 onStop() 这个方法在Activity 完全不可见的时候调用。它和onPause()方法的主要区别在于，如果启动的新Activity 是一个对话框式的Activity,那么onPause()方法会得到执行，而onStop()方法并不会执行。 onDestroy() 这个方法在Activity被销毁之前调用，之后Activity的状态将变为销毁状态。 onRestart

Java 8: First use of stream() or parallelStream() very slow - Usage in practice meaningful?

由 时光总嘲笑我的痴心妄想 提交于 2021-02-18 23:03:45
问题 In the last few days I made some test with external iteration, streams and parallelStreams in Java 8 and measured the duration of the execution time. I also read about the warm up time which I have to consider. But one question still remains. The first time when I call the method stream() or parallelStream() on a collection the execution time is higher than it is for an external iteration. I already know, that when I call the stream() or parallelStream() more often on the same collection and

How to filter postgres array column with the JPA criteria API?

由 大憨熊 提交于 2021-02-18 23:01:48
问题 I am using: Hibernate 4.3.5 Spring JPA 1.6.0 Javax Persistence API 2.1 The "refcodemailing" column is defined as an array of int: int[] My entity object: @Entity @Table public class CalendarEvent implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) private int id = 0; @Convert(converter = IntegerArrayConverter.class) @Column(name = "refcodemailing") private final List<Integer> mailingCodes = new ArrayList<>(); // .... } I am trying to filter the column array with the
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