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SSM integration example
2022-07-26 20:52:00 【Bai Xiaoyun】
SSM Integrate
technological process ：
1. Create a project
2.SSM Integrate
Spring：
SpringConfig
@Configuration @ComponentScan("com.aiit.service") @PropertySource("classpath:jdbc.properties") @Import({ JdbcConfig.class,MybatisConfig.class}) public class SpringConfig { }
MyBatis：
- MyBatisConfig
public class MybatisConfig {
// Set the two bean
@Bean
public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){
SqlSessionFactoryBean sqlSessionFactoryBean=new SqlSessionFactoryBean();
sqlSessionFactoryBean.setDataSource(dataSource);
sqlSessionFactoryBean.setTypeAliasesPackage("com.aiit.domain");
return sqlSessionFactoryBean;
}
@Bean
public MapperScannerConfigurer mapperScannerConfigurer(){
MapperScannerConfigurer mapperScannerConfigurer=new MapperScannerConfigurer();
mapperScannerConfigurer.setBasePackage("com.aiit.dao");
return mapperScannerConfigurer;
}
}
- JdbcConfig
public class JdbcConfig {
@Value("${jdbc.driver}")
private String driver;
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String username;
@Value("${jdbc.password}")
private String password;
@Bean
public DataSource dataSource(){
DruidDataSource druidDataSource=new DruidDataSource();
druidDataSource.setDriverClassName(driver);
druidDataSource.setUrl(url);
druidDataSource.setUsername(username);
druidDataSource.setPassword(password);
return druidDataSource;
}
}
- jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm_db
jdbc.username=root
jdbc.password=20020630
SpringMVC:
- ServletConfig
public class ServletContainsConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[]{
SpringConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{
SpringMvcConfig.class};
}
@Override
protected String[] getServletMappings() {
return new String[]{
"/"};
}
}
- SpringMvcConfig
@Configuration
@ComponentScan("com.aiit.controller")
@EnableWebMvc
public class SpringMvcConfig {
}
3. Function module
Table and entity classes
dao( Interface + Automatic agent )
public interface BookDao {
// newly added
@Insert("insert into tbl_book values(null,#{type},#{name},#{description})")
public void save(Book book);
// modify
@Update("update tbl_book set type=#{type},name=#{name},description=#{description} where id=#{id}")
public void update(Book book);
// Delete
@Delete("delete from tbl_book where id=#{id}")
public void delete(Integer id) ;
// according to id Inquire about
@Select("select * from tbl_book where id=#{id}")
public Book selectById(Integer id);
@Select("select * from tbl_book")
// Query all
public List<Book> selectAll();
}
service( Interface + Implementation class )
- Business layer interface test
public interface BookService {
// newly added
public boolean save(Book book);
// modify
public boolean update(Book book);
// Delete
public boolean delete(Integer id) ;
// according to id Inquire about
public Book selectById(Integer id);
// Query all
public List<Book> selectAll();
}
@Service
public class BookServiceImpl implements BookService {
@Autowired
private BookDao bookDao;
@Override
public boolean save(Book book) {
bookDao.save(book);
return true;
}
@Override
public boolean update(Book book) {
bookDao.update(book);
return true;
}
@Override
public boolean delete(Integer id) {
bookDao.delete(id);
return true;
}
@Override
public Book selectById(Integer id) {
return bookDao.selectById(id);
}
@Override
public List<Book> selectAll() {
return bookDao.selectAll();
}
}
controller
- Presentation layer interface testing
@Controller
@ResponseBody
@RequestMapping("/books")
public class BookContorller {
@Autowired
private BookService bookService;
@PostMapping
public boolean save(@RequestBody Book book) {
bookService.save(book);
return true;
}
@PutMapping
public boolean update(@RequestBody Book book) {
bookService.update(book);
return true;
}
@DeleteMapping("/{id}")
public boolean delete(@PathVariable Integer id) {
bookService.delete(id);
return true;
}
@GetMapping("/{id}")
public Book selectById(@PathVariable Integer id) {
return bookService.selectById(id);
}
@GetMapping
public List<Book> selectAll() {
return bookService.selectAll();
}
}
4. Transaction processing
1. Configure that the current interface method has a transaction
Use @Transactional annotation
@Transactional
public interface BookService {
// newly added
public boolean save(Book book);
// modify
public boolean update(Book book);
// Delete
public boolean delete(Integer id) ;
// according to id Inquire about
public Book selectById(Integer id);
// Query all
public List<Book> selectAll();
}
2. Configure transaction manager
Use formal parameter injection dataSource
stay jdbcConfig Class
@Bean
public PlatformTransactionManager transactionManager(DataSource dataSource){
DataSourceTransactionManager transactionManager = new DataSourceTransactionManager();
transactionManager.setDataSource(dataSource);
return transactionManager;
}
3. Enable annotated transaction driven
stay SpringConfig in
@EnableTransactionManagement
5. Realization Presentation layer and front-end data transmission protocol
Define the return result class
public class Result {
private Object data;
private Integer code;
private String msg;
// Provide construction method
public Result() {
}
public Result(Object data, Integer code) {
this.data = data;
this.code = code;
}
public Result(Object data, Integer code, String msg) {
this.data = data;
this.code = code;
this.msg = msg;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}
Definition Code class
public class Code {
public static final Integer SAVE_OK=20011;
public static final Integer DELETE_OK=20021;
public static final Integer UPDATE_OK=20031;
public static final Integer GET_OK=20041;
public static final Integer SAVE_ERR=20010;
public static final Integer DELETE_ERR=20020;
public static final Integer UPDATE_ERR=20030;
public static final Integer GET_ERR=20040;
}
Modify presentation layer BookController The return value of
@Controller
@ResponseBody
@RequestMapping("/books")
public class BookContorller {
@Autowired
private BookService bookService;
@PostMapping
public Result save(@RequestBody Book book) {
boolean flag = bookService.save(book);
return new Result(flag,flag?Code.SAVE_OK:Code.SAVE_ERR);
}
@PutMapping
public Result update(@RequestBody Book book) {
boolean flag = bookService.update(book);
return new Result(flag,flag?Code.UPDATE_OK:Code.UPDATE_ERR);
}
@DeleteMapping("/{id}")
public Result delete(@PathVariable Integer id) {
boolean flag = bookService.delete(id);
return new Result(flag,flag?Code.DELETE_OK:Code.DELETE_ERR);
}
@GetMapping("/{id}")
public Result selectById(@PathVariable Integer id) {
Book book = bookService.selectById(id);
return new Result(book,book==null?Code.GET_ERR:Code.GET_OK,book==null?" Data query failed ":" The query is successful ");
}
@GetMapping
public Result selectAll() {
List<Book> books = bookService.selectAll();
return new Result(books,books==null?Code.GET_ERR:Code.GET_OK,books==null?" Data query failed ":" The query is successful ");
}
}
6. exception handling
Define a system exception class inheritance RuntimeException
public class BusinessExcpetion extends RuntimeException {
private Integer code;
public BusinessExcpetion(Integer code) {
this.code = code;
}
public BusinessExcpetion(String message, Integer code) {
super(message);
this.code = code;
}
public BusinessExcpetion(String message, Throwable cause, Integer code) {
super(message, cause);
this.code = code;
}
public BusinessExcpetion(Throwable cause, Integer code) {
super(cause);
this.code = code;
}
public BusinessExcpetion(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Integer code) {
super(message, cause, enableSuppression, writableStackTrace);
this.code = code;
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
}
Define a business exception class
public class BusinessExcpetion extends RuntimeException {
private Integer code;
public BusinessExcpetion(Integer code) {
this.code = code;
}
public BusinessExcpetion(String message, Integer code) {
super(message);
this.code = code;
}
public BusinessExcpetion(String message, Throwable cause, Integer code) {
super(message, cause);
this.code = code;
}
public BusinessExcpetion(Throwable cause, Integer code) {
super(cause);
this.code = code;
}
public BusinessExcpetion(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Integer code) {
super(message, cause, enableSuppression, writableStackTrace);
this.code = code;
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
}
Customize an exception handling class in the presentation layer , Used to catch exceptions in the program
We make an exception
@Override
public Book selectById(Integer id) {
// Make an exception to act as a business exception
if (id==100){
throw new BusinessExcpetion(" Please don't challenge my patience with your skills !", Code.BUSINESS_ERR);
}
return bookDao.selectById(id);
}
When the query id yes 100 when , Return business exception
Loading page
1. release
Configure a class inheritance WebMvcConfigurationSupport
@Configuration
public class SpringMvcSupport extends WebMvcConfigurationSupport {
@Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/pages/**").addResourceLocations("/pages/");
registry.addResourceHandler("/css/**").addResourceLocations("/css/");
registry.addResourceHandler("/js/**").addResourceLocations("/js/");
registry.addResourceHandler("/plugins/**").addResourceLocations("/plugins/");
}
}
Release resources, otherwise you will not be able to access resources
To be in SpringMvcConfig Scan the configuration class
The code implementation of the front end ：
<!DOCTYPE html>
<html>
<head>
<!-- page meta -->
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>SpringMVC Case study </title>
<meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
<!-- Introducing styles -->
<link rel="stylesheet" href="../plugins/elementui/index.css">
<link rel="stylesheet" href="../plugins/font-awesome/css/font-awesome.min.css">
<link rel="stylesheet" href="../css/style.css">
</head>
<body class="hold-transition">
<div id="app">
<div class="content-header">
<h1> Book management </h1>
</div>
<div class="app-container">
<div class="box">
<div class="filter-container">
<el-input placeholder=" The name of the book " v-model="pagination.queryString" style="width: 200px;" class="filter-item"></el-input>
<el-button @click="getAll()" class="dalfBut"> Inquire about </el-button>
<el-button type="primary" class="butT" @click="handleCreate()"> newly build </el-button>
</div>
<el-table size="small" current-row-key="id" :data="dataList" stripe highlight-current-row>
<el-table-column type="index" align="center" label=" Serial number "></el-table-column>
<el-table-column prop="type" label=" Book category " align="center"></el-table-column>
<el-table-column prop="name" label=" The name of the book " align="center"></el-table-column>
<el-table-column prop="description" label=" describe " align="center"></el-table-column>
<el-table-column label=" operation " align="center">
<template slot-scope="scope">
<el-button type="primary" size="mini" @click="handleUpdate(scope.row)"> edit </el-button>
<el-button type="danger" size="mini" @click="handleDelete(scope.row)"> Delete </el-button>
</template>
</el-table-column>
</el-table>
<!-- Add tag layer -->
<div class="add-form">
<el-dialog title=" New books " :visible.sync="dialogFormVisible">
<el-form ref="dataAddForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
<el-row>
<el-col :span="12">
<el-form-item label=" Book category " prop="type">
<el-input v-model="formData.type"/>
</el-form-item>
</el-col>
<el-col :span="12">
<el-form-item label=" The name of the book " prop="name">
<el-input v-model="formData.name"/>
</el-form-item>
</el-col>
</el-row>
<el-row>
<el-col :span="24">
<el-form-item label=" describe ">
<el-input v-model="formData.description" type="textarea"></el-input>
</el-form-item>
</el-col>
</el-row>
</el-form>
<div slot="footer" class="dialog-footer">
<el-button @click="dialogFormVisible = false"> Cancel </el-button>
<el-button type="primary" @click="handleAdd()"> determine </el-button>
</div>
</el-dialog>
</div>
<!-- Edit label layer -->
<div class="add-form">
<el-dialog title=" Edit check item " :visible.sync="dialogFormVisible4Edit">
<el-form ref="dataEditForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
<el-row>
<el-col :span="12">
<el-form-item label=" Book category " prop="type">
<el-input v-model="formData.type"/>
</el-form-item>
</el-col>
<el-col :span="12">
<el-form-item label=" The name of the book " prop="name">
<el-input v-model="formData.name"/>
</el-form-item>
</el-col>
</el-row>
<el-row>
<el-col :span="24">
<el-form-item label=" describe ">
<el-input v-model="formData.description" type="textarea"></el-input>
</el-form-item>
</el-col>
</el-row>
</el-form>
<div slot="footer" class="dialog-footer">
<el-button @click="dialogFormVisible4Edit = false"> Cancel </el-button>
<el-button type="primary" @click="handleEdit()"> determine </el-button>
</div>
</el-dialog>
</div>
</div>
</div>
</div>
</body>
<!-- Import component library -->
<script src="../js/vue.js"></script>
<script src="../plugins/elementui/index.js"></script>
<script type="text/javascript" src="../js/jquery.min.js"></script>
<script src="../js/axios-0.18.0.js"></script>
<script> var vue = new Vue({
el: '#app', data:{
pagination: {
}, dataList: [],// List data to be displayed on the current page formData: {
},// The form data dialogFormVisible: false,// Controls whether the form is visible dialogFormVisible4Edit:false,// Edit whether the form is visible rules: {
// Validation rules type: [{
required: true, message: ' Book category is required ', trigger: 'blur' }], name: [{
required: true, message: ' Book name is required ', trigger: 'blur' }] } }, // Hook function ,VUE Automatically execute after object initialization created() {
this.getAll(); }, methods: {
// list getAll() {
// Query all axios.get("/books").then((resp)=>{
this.dataList=resp.data.data; }) }, // Pop up add window handleCreate() {
this.dialogFormVisible=true; }, // Reset form resetForm() {
this.formData={
}; }, // add to handleAdd () {
this.resetForm(); axios.post("/books",this.formData).then((resp)=>{
// After sending the request , Hide the dialog if (resp.data.code==20011){
this.dialogFormVisible=false; // Refresh the page this.$message({
message: ' congratulations , Add success ', type: 'success' }); this.getAll(); } else if (resp.data.code==20010){
// Pop up a pop-up dialog box to prompt error ' this.$message.error(' Add failure '); } else{
// this.$message.error(resp.data.msg); } }) }, // The edit window pops up handleUpdate(row) {
this.dialogFormVisible4Edit=true; axios.get("/books/"+row.id).then((resp)=>{
this.formData=resp.data.data; }) }, // Click the edit button handleEdit() {
this.formData=""; axios.put("/books", this.formData).then((res)=> {
// If the operation is successful if(res.data.code == 20031) {
this.dialogFormVisible4Edit = false; this.$message.success(" Modification successful "); } else if (resp.data.code==20030){
// Pop up a pop-up dialog box to prompt error ' this.$message.error(' Modification failed '); } else{
// this.$message.error(resp.data.msg); } }).finally(()=>{
this.getAll(); }) }, // Delete handleDelete(row) {
// Pop-up dialog box this.$confirm(' This operation will permanently delete the column data , Whether or not to continue ?', ' Tips ', {
confirmButtonText: ' determine ', cancelButtonText: ' Cancel ', type: 'warning' }).then(() => {
axios.delete("/books/"+row.id).then((resp)=>{
if(resp.data.code==20021) {
this.$message({
type: 'success', message: ' Delete successful !' }); } else if (resp.data.code==20030){
// Pop up a pop-up dialog box to prompt error ' this.$message.error(' Delete failed '); } else{
// this.$message.error(resp.data.msg); } }).finally(()=>{
this.getAll(); }) }).catch(() => {
this.$message({
type: 'info', message: ' Delete cancelled ' }); }); } } }) </script>
</html>
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