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dimengzhe
2023-04-17 23:02:30 +08:00
commit ae0b2dcd6e
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28
demo-common/demo-common-base/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<groupId>com.yxt.demo</groupId>
<artifactId>demo-common</artifactId>
<version>0.0.1</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>demo-common-base</artifactId>
<version>0.0.1</version>
<dependencies>
<dependency>
<groupId>com.yxt.demo</groupId>
<artifactId>demo-common-core</artifactId>
<version>0.0.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
</project>

44
demo-common/demo-common-base/src/main/java/com/yxt/demo/common/base/config/handler/CustomException.java Normal file
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package com.yxt.demo.common.base.config.handler;
/**
* @Author dimengzhe
* @Date 2022/5/13 17:23
* @Description
*/
public class CustomException extends Exception {
private static final long serialVersionUID = 1L;
public CustomException() {
super();
}
public CustomException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
super(message, cause, enableSuppression, writableStackTrace);
}
/**
* @param message
* @param cause
*/
public CustomException(String message, Throwable cause) {
super(message, cause);
}
/**
* @param message
*/
public CustomException(String message) {
super(message);
}
/**
* @param cause
*/
public CustomException(Throwable cause) {
super(cause);
}
}

72
demo-common/demo-common-base/src/main/java/com/yxt/demo/common/base/config/utils/SpringUtil.java Normal file
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package com.yxt.demo.common.base.config.utils;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import java.util.Map;
/**
* @Author dimengzhe
* @Date 2022/7/10 14:42
* @Description
*/
@Component
public class SpringUtil implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
if (SpringUtil.applicationContext == null) {
SpringUtil.applicationContext = applicationContext;
}
}
// 获取applicationContext
public static ApplicationContext getApplicationContext() {
return applicationContext;
}
// 通过name获取 Bean.
public static Object getBean(String name) {
return getApplicationContext().getBean(name);
}
// 通过class获取Bean.
public static <T> T getBean(Class<T> clazz) {
return getApplicationContext().getBean(clazz);
}
// 通过name,以及Clazz返回指定的Bean
public static <T> T getBean(String name, Class<T> clazz) {
return getApplicationContext().getBean(name, clazz);
}
/**
* 通过类型获取Spring容器中的对象
*
* @param type
* @param <T>
* @return
*/
public static <T> Map<String, T> getBeansOfType(Class<T> type) {
Map<String, T> beansOfType = getApplicationContext().getBeansOfType(type);
return beansOfType;
}
/**
* 通过类型获取Spring容器中的对象
*
* @param type
* @param includeNonSingletons
* @param allowEagerInit
* @param <T>
* @return
*/
public static <T> Map<String, T> getBeansOfType(Class<T> type, boolean includeNonSingletons, boolean allowEagerInit) {
Map<String, T> beansOfType = getApplicationContext().getBeansOfType(type, includeNonSingletons, allowEagerInit);
return beansOfType;
}
}

72
demo-common/demo-common-base/src/main/java/com/yxt/demo/common/base/config/utils/jackson/CustomizeNullJsonSerializer.java Normal file
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package com.yxt.demo.common.base.config.utils.jackson;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import java.io.IOException;
/**
* @Author dimengzhe
* @Date 2022/5/13 17:15
* @Description
*/
public class CustomizeNullJsonSerializer {
/**
* 处理数组集合类型的null值
*/
public static class NullArrayJsonSerializer extends JsonSerializer<Object> {
@Override
public void serialize(Object value, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeStartArray();
jsonGenerator.writeEndArray();
}
}
/**
* 处理字符串类型的null值
*/
public static class NullStringJsonSerializer extends JsonSerializer<Object> {
@Override
public void serialize(Object value, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeString("");
}
}
/**
* 处理数值类型的null值
*/
public static class NullNumberJsonSerializer extends JsonSerializer<Object> {
@Override
public void serialize(Object value, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeNumber(0);
}
}
/**
* 处理boolean类型的null值
*/
public static class NullBooleanJsonSerializer extends JsonSerializer<Object> {
@Override
public void serialize(Object value, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeBoolean(false);
}
}
/**
* 处理实体对象类型的null值
*/
/* public static class NullObjectJsonSerializer extends JsonSerializer<Object> {
@Override
public void serialize(Object value, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeStartObject();
jsonGenerator.writeEndObject();
}
}*/
}

33
demo-common/demo-common-base/src/main/java/com/yxt/demo/common/base/config/utils/jackson/JacksonConfig.java Normal file
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package com.yxt.demo.common.base.config.utils.jackson;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
/**
* @Author dimengzhe
* @Date 2022/5/13 17:13
* @Description
*/
@Configuration
public class JacksonConfig {
@Bean
@Primary
@ConditionalOnMissingBean(ObjectMapper.class)
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
/** 为objectMapper注册一个带有SerializerModifier的Factory */
objectMapper.setSerializerFactory(objectMapper.getSerializerFactory()
.withSerializerModifier(new MyBeanSerializerModifier()));
SerializerProvider serializerProvider = objectMapper.getSerializerProvider();
// serializerProvider.setNullValueSerializer(new CustomizeNullJsonSerializer
// .NullObjectJsonSerializer());
return objectMapper;
}
}

68
demo-common/demo-common-base/src/main/java/com/yxt/demo/common/base/config/utils/jackson/MyBeanSerializerModifier.java Normal file
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package com.yxt.demo.common.base.config.utils.jackson;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import java.util.Collection;
import java.util.List;
/**
* @Author dimengzhe
* @Date 2022/4/29 18:58
* @Description
*/
public class MyBeanSerializerModifier extends BeanSerializerModifier {
@Override
public List<BeanPropertyWriter> changeProperties(SerializationConfig config,
BeanDescription beanDesc,
List<BeanPropertyWriter> beanProperties) {
// 循环所有的beanPropertyWriter
for (int i = 0; i < beanProperties.size(); i++) {
BeanPropertyWriter writer = beanProperties.get(i);
// 判断字段的类型，如果是数组或集合则注册nullSerializer
/* if (isArrayType(writer)) {
// 给writer注册一个自己的nullSerializer
writer.assignNullSerializer(new CustomizeNullJsonSerializer.NullArrayJsonSerializer());
}*/
if (isStringType(writer)) {
writer.assignNullSerializer(new CustomizeNullJsonSerializer.NullStringJsonSerializer());
}
}
return beanProperties;
}
/**
* 是否是数组
*/
private boolean isArrayType(BeanPropertyWriter writer) {
Class<?> clazz = writer.getType().getRawClass();
return clazz.isArray() || Collection.class.isAssignableFrom(clazz);
}
/**
* 是否是String
*/
private boolean isStringType(BeanPropertyWriter writer) {
Class<?> clazz = writer.getType().getRawClass();
return CharSequence.class.isAssignableFrom(clazz) || Character.class.isAssignableFrom(clazz);
}
/**
* 是否是数值类型
*/
private boolean isNumberType(BeanPropertyWriter writer) {
Class<?> clazz = writer.getType().getRawClass();
return Number.class.isAssignableFrom(clazz);
}
/**
* 是否是boolean
*/
private boolean isBooleanType(BeanPropertyWriter writer) {
Class<?> clazz = writer.getType().getRawClass();
return clazz.equals(Boolean.class);
}
}