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Editor to share with you the example analysis of spring+springmvc+mybatis+maven, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

I. New maven project

It is common to create new maven projects in this way

If your eclipse cannot create a new maven project through the above method, you can also create a new maven project by using the following method

Seeing the project structure below shows that you have successfully created a maven project. But this project reported an error. According to the standard web project structure, this project currently lacks web.xml.

Using eclipse to generate web.xml automatically

Seeing that the project has not reported an error, it means that web.xml has been generated successfully.

II. Maven configuration

The following is the maven configuration of the project, which is configured in pom.xml as follows

4.0.0 com.wffanshao test 0.0.1-SNAPSHOT war 4.3.6.RELEASE org.springframework spring-aop ${spring.version} org.springframework spring-aspects ${spring.version} org.springframework spring-beans ${spring.version} org.springframework spring-context ${spring.version} org.springframework spring-core ${spring.version} org.springframework spring-expression ${spring.version} org.springframework spring- Jdbc ${spring.version} org.springframework spring-tx ${spring.version} org.springframework Spring-web ${spring.version} org.springframework spring-webmvc ${spring.version} Org.mybatis mybatis 3.4.2 org.mybatis mybatis-spring 1.3.1 Aopalliance aopalliance 1.0 asm asm 3.3.1 Org.aspectj aspectjweaver 1.8.1 cglib cglib 2.2.2 Mysql mysql-connector-java 5.1.44 commons-dbcp commons-dbcp 1.4 Commons-pool commons-pool 1.6 commons-logging commons-logging 1.1.1 Javax.servlet jstl 1.2 Org.slf4j slf4j-api 1.7.5 org.slf4j slf4j-log4j12 1.7.5 Org.javassist javassist 3.18.1-GA test Org.apache.maven.plugins maven-compiler-plugin 1.8 1.8 People.apache.snapshots http://repository.apache.org/content/groups/snapshots-group/ False true

Third, build the ssm environment

1. Create 4 new packages in src/main/java, 2 new packages and 2 properties files under src/main/resources, and 1 folder under webapp/WEB-INF. The package name, file name and folder name are shown in the figure.

Src/main/java: generally used to store java files

Src/main/resources: generally used to store ssm-related configuration files

Src/test/java and src/test/resources: generally used to store test files, the files under these two packages will not be compiled, packaged, etc.

Webapp/WEB-INF: generally used to store web dynamic pages that are not accessible to ordinary users but can be accessed by administrators

two。 Configure log4j log files

The log4j.properties code is as follows. Some netizens will produce garbled code when copying the code of the landlord. This is because the properties file of eclipse is encoded as ISO-8859-1 by default.

We need to set the code to UTF-8

# Global logging configuration# is set to DEBUG in the development environment and INFO or ERRORlog4j.rootLogger=DEBUG in the production environment. The stdout# mybatis log is configured to log4j.logger.org.mybatis.example.BlogMapper=TRACE# output to the console, and can also be exported to a file here. You can set log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%5p [% t] -% m% n yourself.

3. Configure the data source file

The db.properties code is as follows. Here, the data source is configured in a non-hard-coded way, that is, the relevant information of the data source is configured in db.properties. The advantage of using non-hard code is to facilitate future maintenance and expansion of the project. Of course, you can also use hard-coded (traditional) configuration, that is, directly in the spring configuration file.

Jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/ssmjdbc.username=rootjdbc.password=test

4. Create a new ssm database in mysql and a new user table in the ssm database. The structure of the table is shown in the figure.

Create a new PO class in 5.com.wffanshao.po named User

The code for User.java is as follows

Package com.wffanshao.po; / * @ describes the user PO class * @ author WF Fan Shao * @ Wechat 13025261795 * * / public class User {private String username; / / username private String password; / / user password public String getUsername () {return username } public void setUsername (String username) {this.username = username;} public String getPassword () {return password;} public void setPassword (String password) {this.password = password;}}

6. Create a new UserMapper interface and UserMapper.xml in com.wffanshao.mapper

The UserMapper.java code is as follows

Package com.wffanshao.mapper; import com.wffanshao.po.User; / * @ description user Mapper interface * @ author WF Fan Shao * @ Wechat 13025261795 * * / public interface UserMapper {/ * @ description add user * @ param user * @ throws Exception * / boolean insertUser (User user) throws Exception;}

The UserMapper.xml code is as follows

INSERT INTO user (username, password) VALUES (# {username}, # {password})

7. Create a new UserService interface in com.wffanshao.service

The UserService.java code is as follows

Package com.wffanshao.service; import com.wffanshao.po.User; / * @ description user Service interface * @ author WF Fan Shao * @ Wechat 13025261795 * * / public interface UserService {/ * @ description add user * @ param user * @ throws Exception * / boolean insertUser (User user) throws Exception;}

8. Create a new UserServiceImpl class in com.wffanshao.service.impl

The UserServiceImpl.java code is as follows

Package com.wffanshao.service.impl; import org.springframework.beans.factory.annotation.Autowired; import com.wffanshao.mapper.UserMapper;import com.wffanshao.po.User;import com.wffanshao.service.UserService; / * @ describes the implementation class of the user's Service interface * @ author WF Fan Shao * @ Wechat 13025261795 * * / public class UserServiceImpl implements UserService {@ Autowired private UserMapper userMapper / * @ describe adding users * @ param user * @ throws Exception * / @ Override public boolean insertUser (User user) throws Exception {return userMapper.insertUser (user);}}

9.。 Create a new UserController class in com.wffanshao.controller

The UserController.java code is as follows

Package com.wffanshao.controller; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PostMapping; import com.wffanshao.po.User;import com.wffanshao.service.UserService / * @ description user Controller * @ author WF Fan Shao * @ Wechat 13025261795 * * / @ Controllerpublic class UserController {@ Autowired private UserService userService; / * @ description jumps to login.jsp * @ return * / @ GetMapping ("/ login") public String login () {return "login" } / * * @ describes getting data from a form submission in login.jsp and adding it to the database. * @ return, if the addition is successful, jump to success.jsp, otherwise Jump to fail.jsp * / @ PostMapping ("/ insertUser") public String insertUser (HttpServletRequest request) throws Exception {User user = new User () String username = request.getParameter ("username"); String password = request.getParameter ("password"); user.setUsername (username); user.setPassword (password); boolean isSuccess = false; isSuccess = userService.insertUser (user); if (isSuccess) {return "success" } else {return "fail";}

10. Create login.jsp, success.jsp and fail.jsp under webapp/WEB-INF/jsp

Login.jsp

Registered user name: password:

Success.jsp

Successful registration

Fail.jsp

Registration failed

11. Create 4 new xml files in src/main/resources/spring

Application-dao.xml

Application-service.xml

ApplicationContext-transaction.xml

Springmvc.xml

Configure the tomcat server

Note: bloggers are using tomcat7

This does not teach you how to download, install and configure the tomcat server. Please learn by yourself, or wait for the blogger to make up for the follow-up tutorial. Here we only teach you how to configure the tomcat server with eclipse. You need to download, decompress and install tomcat in advance before you can do this.

After configuring the tomcat server, you will find that the project has been reported incorrectly

If you open it to check the cause of the error, you will find that the project reported an error because the jsp cannot be parsed. We can solve this problem by setting the project properties, that is, setting the running environment of the project.

After the setup is completed, you will send the project and you have already reported it correctly.

IV. Assembly project

Add the project to the tomcat server

At this point, the project has been successfully assembled into the tomcat server.

Start the tomcat server

Start the server

If you see the started and the console does not report an error, the server starts successfully.

VI. Testing

In the browser address bar, the default port of http://localhost:8080/test/login Magi Tomcat server is 8080.

Then enter the user name and password, and then click Register

Successful registration will jump to the success page, and the user name and password we just entered can be queried in the database.

See the contents shown in the following two pictures to prove the successful integration of the ssm environment.

The above is all the content of this article "sample Analysis of spring+springmvc+mybatis+maven". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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