SpringMVC 转换ajax的json数据乱码问题
Spring mvc 用ajax传输json数据 http://blog.csdn.net/u012457196/article/details/43498139
在spring mvc3中，已经集成了Jackson(json处理器)来处理数据输出json格式,spring中封装的类是org.springframework.http.converter.json.MappingJackson2HttpMessageConverter这个json转换器， 如果是springmvc3.2之前的版本,可以使用org.springframework.http.converter.MappingJacksonHttpMessageConverter这个json转换器。
在spring mvc3中，已经集成了Jackson(json处理器)来处理数据输出json格式,spring中封装的类是org.springframework.http.converter.json.MappingJackson2HttpMessageConverter这个json转换器， 如果是springmvc3.2之前的版本,可以使用org.springframework.http.converter.MappingJacksonHttpMessageConverter这个json转换器。
springmvc使用@ResponseBody返回json乱码解决方法http://www.itxxz.com/a/javashili/ask/2014/1222/501.html
1.springmvc 3.2以上的版本解决乱码的方法：
第一步：在配置中加入：
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Xml代码 <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="org.springframework.http.converter.StringHttpMessageConverter"> <constructor-arg value="UTF-8" /> </bean> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="objectMapper"> <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean"> <property name="failOnEmptyBeans" value="false" /> </bean> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> |
或者可以这样写
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Xml代码 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="jsonRequestConverter" /> </list> </property> </bean> <bean id="jsonRequestConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/> |
第二步：需要的加入的jackson jar如下：
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Xml代码 <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.module</groupId> <artifactId>jackson-module-jaxb-annotations</artifactId> <version>2.1.0</version> </dependency> |
另一种方法:, 貌似偶尔出问题, 还没找原因
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Java代码 package cn.com.voge.utils; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.UnsupportedEncodingException; import java.nio.charset.Charset; import java.util.ArrayList; import java.util.List; import org.springframework.http.HttpInputMessage; import org.springframework.http.HttpOutputMessage; import org.springframework.http.MediaType; import org.springframework.http.converter.AbstractHttpMessageConverter; import org.springframework.http.converter.HttpMessageNotReadableException; import org.springframework.http.converter.HttpMessageNotWritableException; import org.springframework.util.FileCopyUtils; public class UTF8StringHttpMessageConverter extends AbstractHttpMessageConverter<String> { public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8"); private final List<Charset> availableCharsets; public UTF8StringHttpMessageConverter() { this(DEFAULT_CHARSET); } public UTF8StringHttpMessageConverter(Charset defaultCharset) { super(new MediaType("text", "plain", defaultCharset), MediaType.ALL); this.availableCharsets = new ArrayList<Charset>(Charset .availableCharsets().values()); } @Override protected boolean supports(Class<?> clazz) { return String.class.equals(clazz); } @Override protected String readInternal(Class<? extends String> clazz, HttpInputMessage inputMessage) throws IOException, HttpMessageNotReadableException { MediaType contentType = inputMessage.getHeaders().getContentType(); Charset charset = contentType.getCharSet() != null ? contentType .getCharSet() : DEFAULT_CHARSET; return FileCopyUtils.copyToString(new InputStreamReader(inputMessage .getBody(), charset)); } @Override protected void writeInternal(String t, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException { MediaType contentType = outputMessage.getHeaders().getContentType(); Charset charset = contentType.getCharSet() != null ? contentType .getCharSet() : DEFAULT_CHARSET; FileCopyUtils.copy(t, new OutputStreamWriter(outputMessage.getBody(), charset)); } protected List<Charset> getAcceptedCharsets() { return this.availableCharsets; } @Override protected Long getContentLength(String s, MediaType contentType) { if (contentType != null && contentType.getCharSet() != null) { Charset charset = contentType.getCharSet(); try { return (long) s.getBytes(charset.name()).length; } catch (UnsupportedEncodingException ex) { throw new InternalError(ex.getMessage()); } } else { return null; } } } |
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Xml代码 <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="cn.com.voge.utils.UTF8StringHttpMessageConverter"/> </mvc:message-converters> </mvc:annotation-driven> |
2.springmvc 3.1解决中文乱码的方法：
第一步：在配置文件中加入以下代码：
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Xml代码 <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="com.util.spring.UTF8StringHttpMessageConverter"/> </mvc:message-converters> </mvc:annotation-driven> |
第二步：自定义一个编码转换类：
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Java代码 public class UTF8StringHttpMessageConverter extends AbstractHttpMessageConverter<String> { public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8"); private final List<Charset> availableCharsets; public UTF8StringHttpMessageConverter() { this(DEFAULT_CHARSET); } public UTF8StringHttpMessageConverter(Charset defaultCharset) { super(new MediaType("text", "plain", defaultCharset), MediaType.ALL); this.availableCharsets = new ArrayList<Charset>(Charset .availableCharsets().values()); } @Override protected boolean supports(Class<?> clazz) { return String.class.equals(clazz); } @Override protected String readInternal(Class<? extends String> clazz, HttpInputMessage inputMessage) throws IOException, HttpMessageNotReadableException { MediaType contentType = inputMessage.getHeaders().getContentType(); Charset charset = contentType.getCharSet() != null ? contentType.getCharSet() : DEFAULT_CHARSET; return FileCopyUtils.copyToString(new InputStreamReader(inputMessage .getBody(), charset)); } @Override protected void writeInternal(String t, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException { MediaType contentType = outputMessage.getHeaders().getContentType(); Charset charset = contentType.getCharSet() != null ? contentType .getCharSet() : DEFAULT_CHARSET; FileCopyUtils.copy(t, new OutputStreamWriter(outputMessage.getBody(), charset)); } protected List<Charset> getAcceptedCharsets() { return this.availableCharsets; } @Override protected Long getContentLength(String s, MediaType contentType) { if (contentType != null && contentType.getCharSet() != null) { Charset charset = contentType.getCharSet(); try { return (long) s.getBytes(charset.name()).length; } catch (UnsupportedEncodingException ex) { throw new InternalError(ex.getMessage()); } } else { return null; } } } |
第三步：加入需要的jackson包：
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Xml代码 <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.8.8</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.8.8</version> </dependency> |
