配置文件为springboot默认的application.properties文件
方式一
image.png
类
package com.ghgcn.chapter01.properties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
@Configuration
@ConfigurationProperties(prefix="author")
public class AuthorProperties {
private Integer id;
private String name;
private Integer age;
private String birthday;
private Boolean test;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
public Boolean getTest() {
return test;
}
public void setTest(Boolean test) {
this.test = test;
}
}
- @ConfigurationProperties(prefix="author") ---默认读取application.properties文件
*@Configuration --
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component---可以被spring做为组件使用
public @interface Configuration {
测试
@Test
public void testAuthorProperties() throws Exception{
System.err.println(authorProperties);
System.err.println(authorProperties.getAge());
System.err.println(authorProperties.getBirthday());
System.err.println(authorProperties.getId());
System.err.println(authorProperties.getName());
System.err.println(authorProperties.getTest());
}
}
image.png
将string转换为Date
自定义转换器
public class StringToDateConverter implements Converter {
@Override
public Date convert(String source) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
return sdf.parse(source);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
}
添加配置
@Configuration
public class PropertiesConfig {
@Bean(name = "conversionService")
public ConversionServiceFactoryBean getConversionService() {
ConversionServiceFactoryBean bean = new ConversionServiceFactoryBean();
Set converters = new HashSet();
converters.add(new StringToDateConverter());
bean.setConverters(converters);
return bean;
}
}
author类
package com.ghgcn.chapter01.properties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
@Configuration
@ConfigurationProperties(prefix="author")
public class AuthorProperties {
private Integer id;
private String name;
private Integer age;
//这里变为Date
private Date birthday;
private Boolean test;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Boolean getTest() {
return test;
}
public void setTest(Boolean test) {
this.test = test;
}
}
测试
@Test
public void testAuthorProperties() throws Exception{
System.err.println(authorProperties);
System.err.println(authorProperties.getAge());
System.err.println(authorProperties.getBirthday());
System.err.println(authorProperties.getId());
System.err.println(authorProperties.getName());
System.err.println(authorProperties.getTest());
}
image.png
方式二-@Value方式
package com.ghgcn.chapter01.properties;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import java.util.Date;
@Configuration
@ConfigurationProperties //---不指定前缀
public class AuthorProperties1 {
@Value("${author.id}")
private Integer id;
@Value("${author.name}")
private String name;
@Value("${author.age}")
private Integer age;
@Value("${author.birthday}")
private Date birthday;
@Value("${author.test}")
private Boolean test;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Boolean getTest() {
return test;
}
public void setTest(Boolean test) {
this.test = test;
}
}
方式三-Environment方式
@Autowired
private Environment environment;
@Test
public void testEnv() throws Exception{
System.err.println(environment.getProperty("author.id"));
System.err.println(environment.getProperty("author.name"));
System.err.println(environment.getProperty("author.age"));
System.err.println(environment.getProperty("author.birthday"));
System.err.println(environment.getProperty("author.test"));
}
image.png
方式四-读取自定义的properties文件
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&autoReconnect=true&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password=root
APP_NAME=测试下名称
image.png
配置类
package com.ghgcn.chapter01.properties;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import java.io.Serializable;
@Configuration
@PropertySource("classpath:jdbc.properties")
public class JdbcProperties implements Serializable{
@Value("${jdbc.driver}")
private String driver;
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String username;
@Value("${jdbc.password}")
private String password;
@Value("${APP_NAME}")
private String appName;
public String getDriver() {
return driver;
}
public String getUrl() {
return url;
}
public String getUsername() {
return username;
}
public String getPassword() {
return password;
}
public String getAppName() {
return appName;
}
public void setDriver(String driver) {
this.driver = driver;
}
public void setUrl(String url) {
this.url = url;
}
public void setUsername(String username) {
this.username = username;
}
public void setPassword(String password) {
this.password = password;
}
public void setAppName(String appName) {
this.appName = appName;
}
}
@PropertySource("classpath:jdbc.properties") --用来指定文件
配合@Value使用
测试
@Autowired
private JdbcProperties jdbcProperties;
@Test
public void testJdbcProperties() throws Exception{
System.err.println(jdbcProperties);
System.err.println(jdbcProperties.getAppName());
System.err.println(jdbcProperties.getDriver());
System.err.println(jdbcProperties.getPassword());
System.err.println(jdbcProperties.getUrl());
System.err.println(jdbcProperties.getUsername());
}
image.png
完成的测试类
package com.ghgcn.chapter01.test;
import com.ghgcn.chapter01.ChapterApplication;
import com.ghgcn.chapter01.controller.HelloController;
import com.ghgcn.chapter01.properties.AuthorProperties;
import com.ghgcn.chapter01.properties.AuthorProperties1;
import com.ghgcn.chapter01.properties.JdbcProperties;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.core.env.Environment;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockServletContext;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = ChapterApplication.class)
public class Chapter01Test01 {
private MockMvc mvc;
@Autowired
private JdbcProperties jdbcProperties;
@Autowired
private AuthorProperties authorProperties;
@Autowired
private AuthorProperties1 authorProperties1;
@Autowired
private Environment environment;
@Before
public void setup(){
mvc = MockMvcBuilders.standaloneSetup(new HelloController()).build();
}
@Test
public void getHello() throws Exception {
mvc.perform(MockMvcRequestBuilders.get("/hello").accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andExpect(content().string(equalTo("Hello World")));
}
@Test
public void testJdbcProperties() throws Exception{
System.err.println(jdbcProperties);
System.err.println(jdbcProperties.getAppName());
System.err.println(jdbcProperties.getDriver());
System.err.println(jdbcProperties.getPassword());
System.err.println(jdbcProperties.getUrl());
System.err.println(jdbcProperties.getUsername());
}
@Test
public void testAuthorProperties() throws Exception{
System.err.println(authorProperties);
System.err.println(authorProperties.getAge());
System.err.println(authorProperties.getBirthday());
System.err.println(authorProperties.getId());
System.err.println(authorProperties.getName());
System.err.println(authorProperties.getTest());
}
@Test
public void testAuthorProperties1() throws Exception{
System.err.println(authorProperties1);
System.err.println(authorProperties1.getAge());
System.err.println(authorProperties1.getBirthday());
System.err.println(authorProperties1.getId());
System.err.println(authorProperties1.getName());
System.err.println(authorProperties1.getTest());
}
@Test
public void testEnv() throws Exception{
System.err.println(environment.getProperty("author.id"));
System.err.println(environment.getProperty("author.name"));
System.err.println(environment.getProperty("author.age"));
System.err.println(environment.getProperty("author.birthday"));
System.err.println(environment.getProperty("author.test"));
}
}