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Merge pull request #5548 from Doha2012/master 

custom binder example
This commit is contained in:
Loredana Crusoveanu 2018-10-27 18:02:54 +03:00 committed by GitHub
parent 54c1fcb4a9 1e3f51943b
commit 7ec90ff6ef
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8 changed files with 158 additions and 31 deletions
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10
spring-boot-ops/src/main/java/org/baeldung/boot/config/WebConfig.java
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@ -1,16 +1,17 @@
package org.baeldung.boot.config;
import java.util.List;
import org.baeldung.boot.converter.GenericBigDecimalConverter;
import org.baeldung.boot.converter.StringToAbstractEntityConverterFactory;
import org.baeldung.boot.converter.StringToEmployeeConverter;
import org.baeldung.boot.converter.StringToEnumConverterFactory;
import org.baeldung.boot.converter.StringToEnumConverter;
import org.baeldung.boot.web.resolver.HeaderVersionArgumentResolver;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.util.List;
@Configuration
public class WebConfig implements WebMvcConfigurer {
@ -22,7 +23,8 @@ public class WebConfig implements WebMvcConfigurer {
@Override
public void addFormatters(FormatterRegistry registry) {
registry.addConverter(new StringToEmployeeConverter());
registry.addConverterFactory(new StringToEnumConverterFactory());
registry.addConverter(new StringToEnumConverter());
registry.addConverterFactory(new StringToAbstractEntityConverterFactory());
registry.addConverter(new GenericBigDecimalConverter());
}
}

39
spring-boot-ops/src/main/java/org/baeldung/boot/converter/StringToAbstractEntityConverterFactory.java Normal file
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@ -0,0 +1,39 @@
package org.baeldung.boot.converter;
import org.baeldung.boot.domain.AbstractEntity;
import org.baeldung.boot.domain.Bar;
import org.baeldung.boot.domain.Foo;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterFactory;
public class StringToAbstractEntityConverterFactory implements ConverterFactory<String, AbstractEntity>{
@Override
public <T extends AbstractEntity> Converter<String, T> getConverter(Class<T> targetClass) {
return new StringToAbstractEntityConverter<>(targetClass);
}
private static class StringToAbstractEntityConverter<T extends AbstractEntity> implements Converter<String, T> {
private Class<T> targetClass;
public StringToAbstractEntityConverter(Class<T> targetClass) {
this.targetClass = targetClass;
}
@Override
public T convert(String source) {
long id = Long.parseLong(source);
if(this.targetClass == Foo.class) {
return (T) new Foo(id);
}
else if(this.targetClass == Bar.class) {
return (T) new Bar(id);
} else {
return null;
}
}
}
}

12
spring-boot-ops/src/main/java/org/baeldung/boot/converter/StringToEnumConverter.java Normal file
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@ -0,0 +1,12 @@
package org.baeldung.boot.converter;
import org.baeldung.boot.domain.Modes;
import org.springframework.core.convert.converter.Converter;
public class StringToEnumConverter implements Converter<String, Modes> {
@Override
public Modes convert(String from) {
return Modes.valueOf(from);
}
}

27
spring-boot-ops/src/main/java/org/baeldung/boot/converter/StringToEnumConverterFactory.java
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@ -1,27 +0,0 @@
package org.baeldung.boot.converter;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterFactory;
import org.springframework.stereotype.Component;
@Component
public class StringToEnumConverterFactory implements ConverterFactory<String, Enum> {
private static class StringToEnumConverter<T extends Enum> implements Converter<String, T> {
private Class<T> enumType;
public StringToEnumConverter(Class<T> enumType) {
this.enumType = enumType;
}
public T convert(String source) {
return (T) Enum.valueOf(this.enumType, source.trim());
}
}
@Override
public <T extends Enum> Converter<String, T> getConverter(final Class<T> targetType) {
return new StringToEnumConverter(targetType);
}
}

31
spring-boot-ops/src/main/java/org/baeldung/boot/converter/controller/AbstractEntityController.java Normal file
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@ -0,0 +1,31 @@
package org.baeldung.boot.converter.controller;
import org.baeldung.boot.domain.Bar;
import org.baeldung.boot.domain.Foo;
import org.baeldung.boot.domain.Modes;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/string-to-abstract")
public class AbstractEntityController {
@GetMapping("/foo/{foo}")
public ResponseEntity<Object> getStringToFoo(@PathVariable Foo foo) {
return ResponseEntity.ok(foo);
}
@GetMapping("/bar/{bar}")
public ResponseEntity<Object> getStringToBar(@PathVariable Bar bar) {
return ResponseEntity.ok(bar);
}
@GetMapping
public ResponseEntity<Object> getStringToMode(@RequestParam("mode") Modes mode) {
return ResponseEntity.ok(mode);
}
}

10
spring-boot-ops/src/main/java/org/baeldung/boot/domain/AbstractEntity.java Normal file
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@ -0,0 +1,10 @@
package org.baeldung.boot.domain;
public abstract class AbstractEntity {
long id;
public AbstractEntity(long id){
this.id = id;
}
}

29
spring-boot-ops/src/main/java/org/baeldung/boot/domain/Bar.java Normal file
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@ -0,0 +1,29 @@
package org.baeldung.boot.domain;
public class Bar extends AbstractEntity {
private int value;
public Bar(long id) {
super(id);
}
public Bar(long id, int value) {
super(id);
this.value = value;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
@Override
public String toString() {
return "Bar [value=" + value + ", id=" + id + "]";
}
}

31
spring-boot-ops/src/main/java/org/baeldung/boot/domain/Foo.java Normal file
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@ -0,0 +1,31 @@
package org.baeldung.boot.domain;
import static org.apache.commons.lang3.RandomStringUtils.randomAlphanumeric;
public class Foo extends AbstractEntity {
private String name;
public Foo(long id) {
super(id);
name = randomAlphanumeric(4);
}
public Foo(long id, String name) {
super(id);
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Foo [name=" + name + ", id=" + id + "]";
}
}