本文概述
- 准备工作
- 使用工具
- 我们使用的技术
- 创建数据库
- Spring模块
- Angular模块
- 安装Bootstrap CSS框架
准备工作
- 一旦将应用程序部署到服务器上, 就会生成一个表单, 其中包含表格形式的数据以及一些搜索字段。
- 现在, 我们可以从这些字段中搜索表中存在的数据。在这里, 我们使用两个搜索字段-名称和电子邮件ID。
- 要搜索数据, 需要在任何搜索字段中提供完整的关键字。
- 使用任何IDE来开发Spring和Hibernate项目。可能是MyEclipse / Eclipse / Netbeans。在这里, 我们正在使用Eclipse。
- MySQL用于数据库。
- 使用任何IDE来开发Angular项目。它可能是Visual Studio代码/ Sublime。在这里, 我们正在使用Visual Studio Code。
- 服务器:Apache Tomcat / JBoss / Glassfish / Weblogic / Websphere。
- Spring5
- 休眠5
- Angular6
- MySQL
Spring模块 让我们看看我们需要遵循的Spring目录结构:
文章图片
要开发搜索字段应用程序, 请执行以下步骤:-
- 将依赖项添加到pom.xml文件。
<
project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<
modelVersion>
4.0.0<
/modelVersion>
<
groupId>
com.srcmini<
/groupId>
<
artifactId>
SearchFieldExample<
/artifactId>
<
packaging>
war<
/packaging>
<
version>
0.0.1-SNAPSHOT<
/version>
<
name>
SearchFieldExample Maven Webapp<
/name>
<
url>
http://maven.apache.org<
/url>
<
properties>
<
springframework.version>
5.0.6.RELEASE<
/springframework.version>
<
hibernate.version>
5.2.16.Final<
/hibernate.version>
<
mysql.connector.version>
5.1.45<
/mysql.connector.version>
<
c3po.version>
0.9.5.2<
/c3po.version>
<
maven.compiler.source>
1.8<
/maven.compiler.source>
<
maven.compiler.target>
1.8<
/maven.compiler.target>
<
/properties>
<
dependencies>
<
!-- Spring -->
<
dependency>
<
groupId>
org.springframework<
/groupId>
<
artifactId>
spring-webmvc<
/artifactId>
<
version>
${springframework.version}<
/version>
<
/dependency>
<
dependency>
<
groupId>
org.springframework<
/groupId>
<
artifactId>
spring-tx<
/artifactId>
<
version>
${springframework.version}<
/version>
<
/dependency>
<
dependency>
<
groupId>
org.springframework<
/groupId>
<
artifactId>
spring-orm<
/artifactId>
<
version>
${springframework.version}<
/version>
<
/dependency>
<
!-- Add Jackson for JSON converters -->
<
dependency>
<
groupId>
com.fasterxml.jackson.core<
/groupId>
<
artifactId>
jackson-databind<
/artifactId>
<
version>
2.9.5<
/version>
<
/dependency>
<
!-- Hibernate -->
<
dependency>
<
groupId>
org.hibernate<
/groupId>
<
artifactId>
hibernate-core<
/artifactId>
<
version>
${hibernate.version}<
/version>
<
/dependency>
<
!-- MySQL -->
<
dependency>
<
groupId>
mysql<
/groupId>
<
artifactId>
mysql-connector-java<
/artifactId>
<
version>
${mysql.connector.version}<
/version>
<
/dependency>
<
!-- C3PO -->
<
dependency>
<
groupId>
com.mchange<
/groupId>
<
artifactId>
c3p0<
/artifactId>
<
version>
${c3po.version}<
/version>
<
/dependency>
<
!-- Servlet+JSP+JSTL -->
<
dependency>
<
groupId>
javax.servlet<
/groupId>
<
artifactId>
javax.servlet-api<
/artifactId>
<
version>
3.1.0<
/version>
<
/dependency>
<
dependency>
<
groupId>
javax.servlet.jsp<
/groupId>
<
artifactId>
javax.servlet.jsp-api<
/artifactId>
<
version>
2.3.1<
/version>
<
/dependency>
<
dependency>
<
groupId>
javax.servlet<
/groupId>
<
artifactId>
jstl<
/artifactId>
<
version>
1.2<
/version>
<
/dependency>
<
!-- to compensate for java 9 not including jaxb -->
<
dependency>
<
groupId>
javax.xml.bind<
/groupId>
<
artifactId>
jaxb-api<
/artifactId>
<
version>
2.3.0<
/version>
<
/dependency>
<
!--JUnit dependency -->
<
dependency>
<
groupId>
junit<
/groupId>
<
artifactId>
junit<
/artifactId>
<
version>
3.8.1<
/version>
<
scope>
test<
/scope>
<
/dependency>
<
/dependencies>
<
build>
<
finalName>
SearchFieldExample<
/finalName>
<
/build>
<
/project>
- 创建配置类
代替XML, 我们执行基于注释的配置。因此, 我们创建两个类并在其中指定所需的配置。
package com.srcmini.searchfieldexample.config;
import java.beans.PropertyVetoException;
import java.util.Properties;
import javax.sql.DataSource;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import com.mchange.v2.c3p0.ComboPooledDataSource;
@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan("com.srcmini.searchfieldexample")
@PropertySource(value = http://www.srcmini.com/{"classpath:persistence-mysql.properties" })
@PropertySource(value = http://www.srcmini.com/{"classpath:persistence-mysql.properties" })
@PropertySource(value = http://www.srcmini.com/{"classpath:application.properties" })
public class DemoAppConfig implements WebMvcConfigurer {
@Autowired
private Environment env;
@Bean
public DataSource myDataSource() {// create connection pool
ComboPooledDataSource myDataSource = new ComboPooledDataSource();
// set the jdbc driver
try {
myDataSource.setDriverClass("com.mysql.jdbc.Driver");
}
catch (PropertyVetoException exc) {
throw new RuntimeException(exc);
}// set database connection props
myDataSource.setJdbcUrl(env.getProperty("jdbc.url"));
myDataSource.setUser(env.getProperty("jdbc.user"));
myDataSource.setPassword(env.getProperty("jdbc.password"));
// set connection pool props
myDataSource.setInitialPoolSize(getIntProperty("connection.pool.initialPoolSize"));
myDataSource.setMinPoolSize(getIntProperty("connection.pool.minPoolSize"));
myDataSource.setMaxPoolSize(getIntProperty("connection.pool.maxPoolSize"));
myDataSource.setMaxIdleTime(getIntProperty("connection.pool.maxIdleTime"));
return myDataSource;
}
private Properties getHibernateProperties() {// set hibernate properties
Properties props = new Properties();
props.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
props.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
props.setProperty("hibernate.format_sql", env.getProperty("hibernate.format_sql"));
props.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl"));
return props;
}
// need a helper method
// read environment property and convert to intprivate int getIntProperty(String propName) {String propVal = env.getProperty(propName);
// now convert to int
int intPropVal = Integer.parseInt(propVal);
return intPropVal;
}@Bean
public LocalSessionFactoryBean sessionFactory(){// create session factorys
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
// set the properties
sessionFactory.setDataSource(myDataSource());
sessionFactory.setPackagesToScan(env.getProperty("hibernate.packagesToScan"));
sessionFactory.setHibernateProperties(getHibernateProperties());
return sessionFactory;
}@Bean
@Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {// setup transaction manager based on session factory
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory);
return txManager;
} }
MySpringMvcDispatcherServletInitializer.java
package com.srcmini.searchfieldexample.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class MySpringMvcDispatcherServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<
?>
[] getRootConfigClasses() {
// TODO Auto-generated method stub
return null;
} @Override
protected Class<
?>
[] getServletConfigClasses() {
return new Class[] { DemoAppConfig.class };
} @Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
}
- 创建实体类
在这里, 我们正在创建一个Entity / POJO(普通的旧Java对象)类。
package com.srcmini.searchfieldexample.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="user")
public class User {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="userId")
private int userId;
@Column(name="name")
private String name;
@Column(name="email_id" )
public String emailId;
@Column(name="qualification")
public String qualification;
public User() {} public User(int userId, String name, String emailId, String qualification) {
super();
this.userId = userId;
this.name = name;
this.emailId = emailId;
this.qualification = qualification;
} public int getUserId() {
return userId;
} public void setUserId(int userId) {
this.userId = userId;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public String getEmailId() {
return emailId;
} public void setEmailId(String emailId) {
this.emailId = emailId;
} public String getQualification() {
return qualification;
} public void setQualification(String qualification) {
this.qualification = qualification;
} @Override
public String toString() {
return "User [userId=" + userId + ", name=" + name + ", emailId=" + emailId + ", qualification=" + qualification
+ "]";
}
}
- 创建DAO界面
在这里, 我们正在创建DAO接口以执行与数据库相关的操作。
package com.srcmini.searchfieldexample.DAO.interfaces;
import java.util.List;
import com.srcmini.searchfieldexample.entity.User;
public interface UserDAO {
public int SaveUser(User user);
public List<
User>
getFilteredData(User user);
}
- 创建DAO接口实现类
package com.srcmini.searchfieldexample.DAO.implementation;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.srcmini.searchfieldexample.DAO.interfaces.UserDAO;
import com.srcmini.searchfieldexample.entity.User;
@Repository("userDAO")
public class UserDAOImpl implements UserDAO { @Autowired
SessionFactory sessionFactory;
public int SaveUser(User user) {Session session = null;
try {
session = sessionFactory.getCurrentSession();
int userId = (Integer) session.save(user);
return userId;
}
catch(Exception exception)
{System.out.println("Excption while saving data into DB " + exception);
return 0;
}
finally
{
session.flush();
} } public List<
User>
getFilteredData(User user) {Session session = null;
try
{
session = sessionFactory.getCurrentSession();
ArrayList<
Object>
list_field = new ArrayList<
Object>
();
ArrayList<
Object>
list_value = http://www.srcmini.com/new ArrayList<
Object>
();
if(user.getName()==null || user.getName()==""){}else{list_field.add("name");
list_value.add(user.getName());
}
if(user.getEmailId()==null || user.getEmailId()==""){}else{list_field.add("emailId");
list_value.add(user.getEmailId());
}switch (list_field.size()) {case 0:
Query<
User>
query0 = session.createQuery("from User");
return query0.list();
case 1:Query query1 = session.createQuery("from User where " + list_field.get(0) +" = :value0");
query1.setParameter("value0", list_value.get(0));
return query1.list();
case 2:
Query query2 = session.createQuery("from User where " + list_field.get(0) +" =:value0 and " + list_field.get(1) + " =:value1");
query2.setParameter("value0", list_value.get(0));
query2.setParameter("value1", list_value.get(1));
return query2.list();
} return null;
}catch(Exception exception)
{
System.out.println("Error while getting Filtered Data :: " + exception.getMessage());
return null;
}
finally
{
session.flush();
} }}
- 创建服务层接口
在这里, 我们正在创建一个服务层接口, 该接口充当DAO和Entity类之间的桥梁。
package com.srcmini.searchfieldexample.service.interfaces;
import java.util.List;
import com.srcmini.searchfieldexample.entity.User;
public interface UserService {
public int SaveUser(User user);
public List<
User>
getFilteredData(User user);
}
- 创建服务层实现类
package com.srcmini.searchfieldexample.service.implementation;
import java.util.List;
import javax.transaction.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.srcmini.searchfieldexample.DAO.interfaces.UserDAO;
import com.srcmini.searchfieldexample.entity.User;
import com.srcmini.searchfieldexample.service.interfaces.UserService;
@Service("userService")
public class UserServiceImpl implements UserService { @Autowired
UserDAO userDAO;
@Transactional
public int SaveUser(User user) {
return userDAO.SaveUser(user) ;
} @Transactional
public List<
User>
getFilteredData(User user) {
return userDAO.getFilteredData(user);
}}
- 创建控制器类
package com.srcmini.searchfieldexample.restcontroller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.srcmini.searchfieldexample.entity.User;
import com.srcmini.searchfieldexample.service.interfaces.UserService;
@RestController
@RequestMapping("/api")
@CrossOrigin(origins = "http://localhost:4200", allowedHeaders = "*", exposedHeaders = "Authorization")
public class UserController {
@Autowired
private UserService userService;
@PostMapping("/saveUser")
public int saveAdminDetail(@RequestBody User user) {return userService.SaveUser(user);
}
@PostMapping("/filterData")
public List<
User>
getFilteredData(@RequestBody User user) {return userService.getFilteredData(user);
}
}
- 创建属性文件
在这里, 我们正在项目的src / main / resources内部创建属性文件。
#
# JDBC connection properties
#
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/searchfieldexample?useSSL=false
jdbc.user=root
jdbc.password=#
# Connection pool properties
#
connection.pool.initialPoolSize=5
connection.pool.minPoolSize=5
connection.pool.maxPoolSize=20
connection.pool.maxIdleTime=3000#
# Hibernate properties
#
<
!-- hibernate.dialect=org.hibernate.dialect.MySQLDialect -->
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.hbm2ddl=update
hibernate.packagesToScan=com.srcmini.searchfieldexample.entity
Angular模块 让我们看看我们需要遵循的Angular目录结构:
文章图片
- 创建一个Angular项目
新的SearchFieldExample
文章图片
文章图片
在这里, SearchFieldExample是项目的名称。
安装Bootstrap CSS框架 使用以下命令在项目中安装引导程序。
npm install bootstrap@3.3.7-保存
现在, 在style.css文件中包含以下代码。
@import "~bootstrap/dist/css/bootstrap.css";
- 生成组件
在Visual Studio中打开项目, 然后使用以下命令生成Angular组件:
g c ShowData的
文章图片
我们还使用以下命令创建服务类:-
服务数量/用户
文章图片
- 编辑app.module.ts文件
- Import HttpModule-在这里, 我们将为服务器请求导入HttpModule, 并在imports数组中指定它。
- 注册服务类-在这里, 我们在providers数组中提到了服务类。
- 导入ReactiveFormsModule-在这里, 我们将为反应形式导入ReactiveFormsModule, 并在imports数组中指定它。
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
// import ReactiveFormsModule for reactive form
import { ReactiveFormsModule } from '@angular/forms';
// import Http module
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { ShowDataComponent } from './show-data/show-data.component';
import { UserService } from './services/user.service';
@NgModule({
declarations: [
AppComponent, ShowDataComponent
], imports: [
BrowserModule, ReactiveFormsModule, HttpModule
], providers: [UserService], bootstrap: [AppComponent]
})
export class AppModule { }
- 编辑app.component.html文件
<
app-show-data>
<
/app-show-data>
- 创建User.ts类
的g个类/用户
文章图片
现在, 在User类中指定必填字段。
export class User {name : string;
emailId : string;
qualification : string;
}
该类的目的是将指定的字段与Spring实体类的字段进行映射。
- 编辑user.service.ts文件
import { Injectable } from '@angular/core';
import { User } from '../classes/user';
import { Http } from '@angular/http';
@Injectable({
providedIn: 'root'
})
export class UserService {private baseUrl = "http://localhost:8080/SearchFieldExample/api/";
constructor(private http : Http) { }getData(user : User)
{
let url = this.baseUrl + "filterData";
returnthis.http.post(url , user);
}}
- 编辑show-data.component.ts文件
import { Component, OnInit } from '@angular/core';
import { User } from '../classes/user';
import { UserService } from '../services/user.service';
import { FormGroup, FormControl } from '@angular/forms';
@Component({
selector: 'app-show-data', templateUrl: './show-data.component.html', styleUrls: ['./show-data.component.css']
})
export class ShowDataComponent implements OnInit {private user = new User();
private data;
constructor(private userService : UserService) { }ngOnInit() {
this.getData(this.user);
}form = new FormGroup({
name : new FormControl(), email : new FormControl()
});
getData(user)
{
this.userService.getData(user).subscribe(
response =>
{
this.data = http://www.srcmini.com/response.json();
}, error =>
{
console.log("error while getting user Details");
}
);
}searchForm(searchInfo)
{
this.user.name = this.Name.value;
this.user.emailId = this.Email.value;
this.getData(this.user);
}get Name()
{
return this.form.get('name');
}get Email()
{
return this.form.get('email');
}}
- 编辑show-data.component.html文件
<
br>
<
br>
<
div class="row">
<
div class="col-md-offset-4 col-md-4">
<
form [formGroup]="form" #searchInfo (ngSubmit)="searchForm(searchInfo)">
<
table>
<
tr>
<
td>
<
input type="text" formControlName="name" placeholder="Enter name" class="form-control">
<
/td>
<
td>
<
input type="text" formControlName="email" placeholder="Enter EmailId" class="form-control">
<
/td>
<
td>
<
button class="btn btn-primary hidden-xs">
Search<
/button>
<
/td>
<
/tr>
<
/table>
<
/form>
<
/div>
<
/div>
<
br>
<
br>
<
div class="row">
<
div class="col-md-offset-4 col-md-4">
<
table class="table table-bordered table-striped table-responsive">
<
tr>
<
th>
Name<
/th>
<
th>
Email<
/th>
<
th>
Qualification<
/th>
<
/tr>
<
ng-container *ngFor="let item of data">
<
tr>
<
td>
{{item.name}}<
/td>
<
td>
{{item.emailId}}<
/td>
<
td>
{{item.qualification}}<
/td>
<
/tr>
<
/ng-container>
<
/table>
<
/div>
<
/div>
完成后, 在Web浏览器中输入URL http:// localhost:4200 /。出现以下网页:
文章图片
现在, 我们可以通过在搜索字段中提供特定的关键字来搜索数据。
【Spring Angular搜索属性应用实例图解】按名称搜索:
文章图片
通过电子邮件ID搜索:
文章图片
下载此示例
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