java practice projects

OK5. Configure Tomcat:This configuration can only be configured once, not every project needs to be configuredEdit Tomcat directory under/conf/tomcat-users.xmlAfter adding the following code to the The user name and password here correspond to the configuration in maven above6. Deploy the Running project:Run the Tomcat directory first/bin/startup.bat clean install Tomcat7:redeployThen right-click on the project run As--maven build and enter in goals: Clean install Tomcat7:redeployRun the projec

Com.spring.bean.Java classes that need to be created:Hero. javaProperty:Private String Heroname;Priate String type;Private String description;Generate the corresponding get, set method, and then rewrite the ToString method to your liking.Create a new source folder etc, specifically for storing configuration files. Write the XML file--heropool.xml of the hero pool.In the configuration to add a hero's specific information: Luban seventh, Archer, hehe, successfully detected the opposite IQ, it see

" + Util.add (A, b));}}In this class, right-click the run as, Java application, and you can have the results.4. Import the jar package into the idea in the form of MavenFirst change the name of the jar package to what we want, such as Spring-message-1.0.0.jar, then run the MAVEN command (requires MAVEN environment)MVN Install:install-file-dfile=c:\users\xiabin\desktop\spring-message-1.0.0.jar-dgroupid=com.ontoweb- Dartifactid=spring-message-dversion=1

Access path, that is, the root path when accessing the Web system in a browser, such as http://localhost:8080/xxxx/index.jsp here xxxx.That is, the value obtained by Request.getcontextpath ().When we do system development, in the local workspace may have multiple versions of the same system, such as the above-mentioned XXXX system, there may be xxxx1, Xxxx1_1, xxxx1_2 represents the system of 1.0, 1.1, 1.2 version, The corresponding project name is the system access path by default, however, we

this blog is original: Integrated still Silicon Valley (http://www.atguigu.com) System tutorial (deep thank) and network of existing resources (blogs, documents, books, etc.), the source of resources I will markThe purpose of this blog: ① summary of their own learning process, equivalent to study notes ② to share their own experience to everyone, learn from each other, communication, not commercialcontent inevitably appear problems, welcome to correct, exchange, discussion, you can leave a messa

For a programmer who has switched from C ++ to Java, it is also difficult to create java executable files. The project was left behind by a few colleagues. Several necessary library files and tools for creating executable files were encrypted and unblocked; I don't know if it is because the company's relationship with the previous colleagues is not well handled. In addition, the qq of the former colleagues

options here, select Search sequence. This is because we have to package the JDK environment so that the program can be used across platforms. First copy the JRE directory under your system's JDK to the "desktop \project\jre" in the output directory of your. exe file, and then go back to exe4j to remove all items from the list in the pop-up window. I have three items, a registry, a Java environment variable, a JDK environment variable, do not. Then c

available, then use this method to get ServletContext directly:Contextloader.getcurrentwebapplicationcontext (). Getservletcontext ()update20151228:When you write a file, you may need to obtain a path, such as when uploading a file that requires an output stream. the output stream cannot be obtained directly through ServletContext, but the actual path can be obtained directly. such as:Servletcontext.getrealpath ("/")The path obtained is the ${context}/path, and the output stream is obtained bas

on Types/methods/fields/constructors can also be modified and it's possible to Add/remove/change Valu Es in enum types.through your own attempts to discover the use of the spring-loaded project, you can actually implement a hot deployment of Java applications. The following describes how to introduce spring-loaded into a project. We can run the following code and then modify the A.say () method to see if it can be changed dynamically without restart

1:javac-d the compiled class file output directory Specifies the source file location. For exampleFor multiple packages under the source code compilation, it seems that Javac does not support iterative compilation, may need to pass through multiple source location to compile. One convenient way is to use the Windows Bat script or the Linux shell script as a compile source file list and then compile according to the source file manifest, for example:DIR/S/B *.

not available, then use this method to get ServletContext directly:Contextloader.getcurrentwebapplicationcontext (). Getservletcontext ()update20151228:When you write a file, you may need to obtain a path, such as when uploading a file that requires an output stream. The output stream cannot be obtained directly through ServletContext, but the actual path can be obtained directly. Such as:Servletcontext.getrealpath ("/")The path obtained is the ${context}/path, and the output stream is obtained

changed, after adding the build operation here Configuration Select Send Buiild artifacets over SSH(8) Enter the configurationName: is the name of the publish over SSH configuration that was just inside the system setupSource Filew: The location of the project Jar package, which Jenkins automatically packed and compiled in the target directoryRemove prefix: Remove prefix targetRemote directory: directory where the project jar package is stored remotelyExec Command: The shell script executed #这里

Recently, the project has been done for half a year to the final Test ready to go, after the flow of the process to start doing some performance testing, during this time to do a lot of performance optimization work, in this take notes, share. Exchange, hope that the same people have something new welcome to add. Do not do too much in this particular operation, mainly from the idea of starting. Performance optimization is mainly from several aspects. 1. From the perspective of architectural desi

Several methods and examples for connecting to databases in Java projects1. The most primitive writing method (also for Beginners)First import the database to connect to the basic class, and then the other is simple. In actual operation, you only need to load the driver class and then call the SQL statement. The following is a simple program example.// Select. javaImport java.net. URL;Import java. SQL .*;Cl

presentation layer . The display layer converts VO to the DTO required by the service layer correspondence method and transmits it to the service layer. The service layer first constructs (or rebuilds) a do based on the data of the DTO , invoking the Do business method to complete the specific business. The service layer converts do to the PO that corresponds to the persistence layer (you can use the ORM tool or not), calls the persistence method of the persistent layer, passes the PO to it, an

1.new template for Java file/*** @Title: ${file_name}* @Copyright: Copyright (c) 2016* @Description:* * @Company: ucfgroup.com* @Created on ${date}${time}* @author [email protected]*/2.maven separate configuration, it is recommended not to use embedded3.team ignored resource The resources that were ignored when committingAdd Filter conditionsTarget. classpath. settings. Project4.javaScript validation all removed, do not let the IDE to verify JS, other