diff --git a/spring-boot/src/main/java/org/baeldung/boot/config/WebConfig.java b/spring-boot/src/main/java/org/baeldung/boot/config/WebConfig.java index 69abeb0bdd..825e38f622 100644 --- a/spring-boot/src/main/java/org/baeldung/boot/config/WebConfig.java +++ b/spring-boot/src/main/java/org/baeldung/boot/config/WebConfig.java @@ -1,6 +1,8 @@ package org.baeldung.boot.config; import org.baeldung.boot.converter.StringToEmployeeConverter; +import org.baeldung.boot.converter.StringToEnumConverterFactory; +import org.baeldung.boot.converter.GenericBigDecimalConverter; import org.springframework.context.annotation.Configuration; import org.springframework.format.FormatterRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @@ -11,5 +13,7 @@ public class WebConfig implements WebMvcConfigurer { @Override public void addFormatters(FormatterRegistry registry) { registry.addConverter(new StringToEmployeeConverter()); + registry.addConverterFactory(new StringToEnumConverterFactory()); + registry.addConverter(new GenericBigDecimalConverter()); } } diff --git a/spring-boot/src/main/java/org/baeldung/boot/converter/GenericBigDecimalConverter.java b/spring-boot/src/main/java/org/baeldung/boot/converter/GenericBigDecimalConverter.java new file mode 100644 index 0000000000..8add28fc2d --- /dev/null +++ b/spring-boot/src/main/java/org/baeldung/boot/converter/GenericBigDecimalConverter.java @@ -0,0 +1,31 @@ +package org.baeldung.boot.converter; + +import com.google.common.collect.ImmutableSet; +import org.springframework.core.convert.TypeDescriptor; +import org.springframework.core.convert.converter.GenericConverter; +import java.math.BigDecimal; +import java.util.Set; +public class GenericBigDecimalConverter implements GenericConverter { + @Override + public Set getConvertibleTypes () { + ConvertiblePair[] pairs = new ConvertiblePair[] { + new ConvertiblePair(Number.class, BigDecimal.class), + new ConvertiblePair(String.class, BigDecimal.class)}; + return ImmutableSet.copyOf(pairs); + } + @Override + public Object convert (Object source, TypeDescriptor sourceType, + TypeDescriptor targetType) { + if (sourceType.getType() == BigDecimal.class) { + return source; + } + if(sourceType.getType() == String.class) { + String number = (String) source; + return new BigDecimal(number); + } else { + Number number = (Number) source; + BigDecimal converted = new BigDecimal(number.doubleValue()); + return converted.setScale(2, BigDecimal.ROUND_HALF_EVEN); + } + } +} \ No newline at end of file diff --git a/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEmployeeConverter.java b/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEmployeeConverter.java index 6902cd84d1..1bf75b38f0 100644 --- a/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEmployeeConverter.java +++ b/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEmployeeConverter.java @@ -9,8 +9,6 @@ public class StringToEmployeeConverter implements Converter { @Override public Employee convert(String from) { String[] data = from.split(","); - return new Employee( - Long.parseLong(data[0]), - Double.parseDouble(data[1])); + return new Employee(Long.parseLong(data[0]), Double.parseDouble(data[1])); } } diff --git a/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEnumConverterFactory.java b/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEnumConverterFactory.java new file mode 100644 index 0000000000..ddb2cd2b08 --- /dev/null +++ b/spring-boot/src/main/java/org/baeldung/boot/converter/StringToEnumConverterFactory.java @@ -0,0 +1,30 @@ +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 { + + private static class StringToEnumConverter + implements Converter { + + private Class enumType; + + public StringToEnumConverter(Class enumType) { + this.enumType = enumType; + } + + public T convert(String source) { + return (T) Enum.valueOf(this.enumType, source.trim()); + } + } + + @Override + public Converter getConverter( + Class targetType) { + return new StringToEnumConverter(targetType); + } +} \ No newline at end of file diff --git a/spring-boot/src/test/java/org/baeldung/converter/CustomConverterIntegrationTest.java b/spring-boot/src/test/java/org/baeldung/converter/CustomConverterIntegrationTest.java index 1356de6d0e..bd1ae2c8fa 100644 --- a/spring-boot/src/test/java/org/baeldung/converter/CustomConverterIntegrationTest.java +++ b/spring-boot/src/test/java/org/baeldung/converter/CustomConverterIntegrationTest.java @@ -43,7 +43,7 @@ public class CustomConverterIntegrationTest { @Test public void whenConvertingToBigDecimalUsingGenericConverter_thenSuccess() { - assertThat(conversionService.convert(Integer.valueOf(11), BigDecimal.class)).isEqualTo(BigDecimal.valueOf(11.00).setScale(0, BigDecimal.ROUND_HALF_EVEN)); + assertThat(conversionService.convert(Integer.valueOf(11), BigDecimal.class)).isEqualTo(BigDecimal.valueOf(11.00).setScale(2, BigDecimal.ROUND_HALF_EVEN)); assertThat(conversionService.convert(Double.valueOf(25.23), BigDecimal.class)).isEqualByComparingTo(BigDecimal.valueOf(Double.valueOf(25.23))); assertThat(conversionService.convert("2.32", BigDecimal.class)).isEqualTo(BigDecimal.valueOf(2.32)); }