50 lines
2.0 KiB
Java
50 lines
2.0 KiB
Java
package cn.bunny.config;
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import com.fasterxml.jackson.core.JsonParser;
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import com.fasterxml.jackson.databind.DeserializationContext;
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import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer;
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import org.springframework.beans.propertyeditors.StringTrimmerEditor;
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import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
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import org.springframework.context.annotation.Bean;
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import org.springframework.web.bind.WebDataBinder;
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import org.springframework.web.bind.annotation.ControllerAdvice;
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import org.springframework.web.bind.annotation.InitBinder;
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import java.io.IOException;
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/**
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* 去除前端传递的空格
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*/
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@ControllerAdvice
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public class ControllerStringParamTrimConfig {
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/**
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* 创建 String trim 编辑器
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* 构造方法中 boolean 参数含义为如果是空白字符串,是否转换为null
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* 即如果为true,那么 " " 会被转换为 null,否者为 ""
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*/
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@InitBinder
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public void initBinder(WebDataBinder binder) {
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StringTrimmerEditor propertyEditor = new StringTrimmerEditor(false);
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// 为 String 类对象注册编辑器
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binder.registerCustomEditor(String.class, propertyEditor);
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}
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@Bean
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public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
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return jacksonObjectMapperBuilder -> {
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// 为 String 类型自定义反序列化操作
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jacksonObjectMapperBuilder
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.deserializerByType(String.class, new StdScalarDeserializer<String>(String.class) {
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@Override
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public String deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException {
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// // 去除全部空格
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// return StringUtils.trimAllWhitespace(jsonParser.getValueAsString());
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// 仅去除前后空格
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return jsonParser.getValueAsString().trim();
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}
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});
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};
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}
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} |