Best practice to handle third party SSL certificate in Java

I'm working on an application that calls a third-party webservice over https. So I need to add this certificate to the truststore of my application. I can see 3 solutions to fix my problem: add this certificate to $JAVA_HOME/jre/lib/security/cacerts create a custom truststore and launch my JVM with -Djavax.net.ssl.trustStore= ... programatically load this truststore when starting my a

Java中处理第三方SSL证书的最佳实践

我正在研究一个通过https调用第三方web服务的应用程序。 所以我需要将这个证书添加到我的应用程序的信任库中。 我可以看到3个解决方案来解决我的问题: 将此证书添加到$JAVA_HOME/jre/lib/security/cacerts 创建自定义信任库并使用-Djavax.net.ssl.trustStore= ...启动我的JVM -Djavax.net.ssl.trustStore= ... 在启动我的应用程序时以编程方式加载此信任库 你建议/阻止我使用哪种解决方案? 我更喜欢第二个。 因为

Convert Mat to BufferedImage

I coded a erosion and dilation in opencv, I tried to convert Mat object to BufferedImage so that the image can be displayed in JFrame. I have tried the code in this link How to match the color models of BufferedImage and Mat? But it didn't show the eroded/dilated image as I want. public class Erotion { public static void main (String[] args){ try{ System.loadLibrar

将Mat转换为BufferedImage

我在opencv中编码了一个侵蚀和膨胀,我尝试将Mat对象转换为BufferedImage,以便可以在JFrame中显示图像。 我已经尝试了这个链接中的代码如何匹配BufferedImage和Mat的颜色模型? 但它没有显示我想要的腐蚀/扩大的图像。 public class Erotion { public static void main (String[] args){ try{ System.loadLibrary(Core.NATIVE_LIBRARY_NAME); File input = new File ("hallo.jpg");

How to pass data from selected rows using checkboxes from JSP to the server

I'd like to know if there's any way to send data to the server for the selected rows using the checkboxes I've put on those rows? I mean , how can I send only the data of those selected rows to the server? Here's the html code I use: <table> <thead> <tr class="tableheader"> <td width="10%"></td> <td width="30%">Vehicle</

如何使用复选框将所选行中的数据从JSP传递到服务器

我想知道是否有任何方法使用我在这些行上放置的复选框向选定行发送数据到服务器? 我的意思是,如何才能将这些选定行的数据发送到服务器? 以下是我使用的html代码: <table> <thead> <tr class="tableheader"> <td width="10%"></td> <td width="30%">Vehicle</td> <td width="40%">Driver</td> <td width="10%">Mileage</td

How to automatically generate getters and setters in Android Studio

在Android Studio中是否有一个快捷方式来自动生成给定类中的getter和setter? Using Alt+ Insert in the editor, you may easily generate getter and setter methods for any fields of your class. This has the same effect as using the Menu Bar -> Code -> Generate... and then using shift or control button, select all the variables you need to add getters and setters In OSX, ⌘+N by default. Right

如何在Android Studio中自动生成getter和setter

在Android Studio中是否有一个快捷方式来自动生成给定类中的getter和setter? 在编辑器中使用Alt + Insert,您可以轻松地为班级的任何字段生成getter和setter方法。 这与使用菜单栏 - >代码 - >生成...具有相同的效果 然后使用shift或control按钮,选择所有需要添加getters和setters的变量 在OSX中,默认情况下为⌘+ N. 右键单击并选择“生成...”以查看当前映射。 您可以选择多个字段,通过一步来为其生成获取者/设

Accessing local field vs object field. Is doc wrong?

The documentation seems to be wrong. Could someone tell me which is true? In Performance Myths section is: On devices without a JIT, caching field accesses is about 20% faster than repeatedly accesssing the field. With a JIT, field access costs about the same as local access. In Avoid Internal Getters/Setters section is: Without a JIT, direct field access is about 3x faster than invokin

访问本地字段vs对象字段。 doc是错误的吗?

文件似乎是错误的。 有人能告诉我哪个是真的吗? 在性能神话部分是: 在没有JIT的设备上,缓存字段访问速度比重复访问字段快20%左右 。 通过JIT,现场访问成本与本地访问大致相同。 避免内部获取者/设置者部分是: 没有JIT,直接字段访问比调用一个简单的getter快3倍 。 使用JIT(直接字段访问与访问本地一样便宜),直接字段访问比调用一个简单的getter快7倍 。 很明显,没有JIT本地访问速度更快。 同样清楚的是

Android Dev: Avoiding Internal Getters/Setters?

I was reading this section in the Android Dev Guide : here and I was wondering what is a "Virtual method call" and what does it mean when it says "locally" using a getter/setter? I'm trying to figure out if what they're saying is avoid using methods EVER (for instance a method from an instanced object) or just inside a class you're already working in to get a

Android开发人员:避免内部获取者/设置者?

我正在阅读Android Dev Guide中的这一部分: 这里 我想知道什么是“虚拟方法调用”,当它使用getter / setter说“本地”时,它意味着什么? 我试图弄清楚他们说的是避免使用方法EVER(例如来自实例化对象的方法)还是仅仅在已经在工作的类中获取变量? 总而言之,如果我在不同的类中,并且想知道另一个类中的变量的值,那么执行otherclass.getX()比执行其他otherclass.x更昂贵吗? 或者,如果它不在当前类中执行方法或直接访

Is there a way to automatically generate getters and setters in Eclipse?

I am working on a new Android project ( Java ), and created an Object with a large number of variables. Since I am planning to add getters and setters for all of them, I was wondering: is there a shortcut in Eclipse for automatically generating the getters and setters in a given class? Bring up the context menu (ie right click) in the source code window of the desired class. Then select the S

有没有办法在Eclipse中自动生成getter和setter?

我正在研究一个新的Android项目( Java ),并创建了一个包含大量变量的Object。 因为我打算为它们添加getter和setter,所以我想知道: Eclipse有没有一种快捷方式可以自动生成给定类中的getter和setter? 在所需的类的源代码窗口中调出上下文菜单(即右键单击)。 然后选择Source子菜单; 从该菜单中选择Generate Getters and Setters...将会出现一个向导窗口。 Source -> Generate Getters and Setters... 选择你想

'Avoid Internal Getters/Setters'

Just read this on the dev site: Avoid Internal Getters/Setters In native languages like C++ it's common practice to use getters (eg i = getCount()) instead of accessing the field directly (i = mCount). This is an excellent habit for C++, because the compiler can usually inline the access, and if you need to restrict or debug field access you can add the code at any time. On Android, th

'避免内部吸收者/安装者'

只需在开发者网站上阅读以下内容: 避免内部吸收者/安装者 在像C ++这样的本地语言中,通常使用getter(例如i = getCount())而不是直接访问字段(i = mCount)。 对于C ++来说,这是一个很好的习惯,因为编译器通常可以内联访问,如果需要限制或调试字段访问,则可以随时添加代码。 在Android上,这是一个坏主意。 虚拟方法调用比实例字段查找更昂贵。 遵循常见的面向对象的编程实践是合理的,并且在公共接口中有get

Get object name of a class from the user in Java

I want the user to enter the name of the object to be used in the code. For example, if I have a class public class Person{ ....... } now instead of me creating an object with a specific name like Person student; I want the user to enter the name for the object maybe like teacher, and then an object teacher of the class person will be created. I do not know if this is even possible in java

在Java中获取用户的类的对象名称

我希望用户输入要在代码中使用的对象的名称。 例如,如果我有一个班 public class Person{ ....... } 现在,而不是我创建一个具有特定名称的对象 Person student; 我想让用户输入对象的名字,比如老师,然后创建一个班主任的对象老师。 我不知道这是否甚至可能在Java中,我查找的许多解决方案都是使用地图,但对于我来说,解释并不够清晰,因为我对java很陌生。 所以,如果任何人都可以解释如何使用代码片段来完成这将

Quartz scheduler Failed to obtain DB connection from data source

I'm trying to setup quartz scheduler with mysql database and I'm getting the below exception. Can someone help me on this, Please. I have included the below jars: c3p0-0.9.1.1.jar jta-1.1.jar mysql-connector-java-5.1.27.jar quartz-2.2.1.jar quartz-jobs-2.2.1.jar slf4j-api-1.7.10.jar slf4j-simple-1.7.25.jar [LMWJobScheduler_QuartzSchedulerThread] ERROR org.quartz.core.Err

Quartz scheduler无法从数据源获取数据库连接

我正在尝试使用mysql数据库来设置石英调度程序,并且我得到了下面的异常。 有人可以帮我解决这个问题吗? 我已经包括了下面的罐子: c3p0-0.9.1.1.jar JTA-1.1.jar MySQL的连接器的Java-5.1.27.jar 石英2.2.1.jar 石英工作-2.2.1.jar SLF4J-API 1.7.10.jar SLF4J-简单1.7.25.jar [LMWJobScheduler_QuartzSchedulerThread] ERROR org.quartz.core.ErrorLogger - An error occurred while scanning for the next