{"id":3097,"date":"2018-01-18T10:14:04","date_gmt":"2018-01-18T01:14:04","guid":{"rendered":"http:\/\/www.ois-yokohama.co.jp\/oisblog\/?p=3097"},"modified":"2021-05-19T09:36:43","modified_gmt":"2021-05-19T00:36:43","slug":"spring3-2-jackson-restapi-json-null%e2%87%92%e7%a9%ba%e7%99%bd%e5%a4%89%e6%8f%9b","status":"publish","type":"post","link":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/archives\/3097","title":{"rendered":"Spring3.2 Jackson RestApi Json null\u21d2\u7a7a\u767d\u5909\u63db"},"content":{"rendered":"
\"\"<\/div>\n

Spring3.2&Jackson\u3092\u4f7f\u7528\u3057\u3066RestAPI\uff08Json\u30c7\u30fc\u30bf\u3092\u8fd4\u5374\uff09\u3092\u958b\u767a\u3059\u308b\u6642\u306bnull\u21d2\u7a7a\u767d\u5909\u63db\u306b\u306f\u307e\u3063\u305f\u3002\u3002\u3002
\n\u524d\u3082\u540c\u3058\u3088\u3046\u306a\u4e8b\u3067\u306f\u307e\u3063\u305f\u6c17\u304c\u3059\u308b\u306e\u3067\u4eca\u56de\u306f\u30e1\u30e2\u3092\u6b8b\u3059\u3002\uff08\u524d\u56de\u3001\u3001\u3001\uff09<\/p>\n

\u8272\u3005\u5272\u611b\u3057\u3066\u66f8\u304f\u3068\u4ee5\u4e0b\u306e2\u30d1\u30bf\u30fc\u30f3\u306b\u884c\u304d\u3064\u304f\u3002<\/p>\n

\u2460Bean\u306b@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)\u3068\u66f8\u3044\u3068\u3051\u3070\u5e78\u305b\u306b\u306a\u308c\u308b\u3002<\/strong>
\n\u2461servlet-context.xml\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u4e8b\u3092\u66f8\u304f\u3068\u5e78\u305b\u306b\u306a\u308c\u308b\u3002\uff08NullValueSerializer\u306e\u5b9f\u88c5\u306f\u5225\u9014\u5fc5\u8981\uff09<\/strong><\/p>\n

\t<bean id=\"nullValueSerializer\" class=\"{NullValueSerializer\u3092\u5b9f\u88c5\u3057\u305f\u30af\u30e9\u30b9}\" \/>\r\n\t<bean id=\"serializerProvider\" class=\"org.codehaus.jackson.map.ser.StdSerializerProvider\" >\r\n\t\t<property name=\"nullValueSerializer\" ref=\"nullValueSerializer\" \/>\r\n\t<\/bean>\r\n\t<bean id=\"jacksonObjectMapper\" class=\"org.codehaus.jackson.map.ObjectMapper\">\r\n\t\t<property name=\"serializerProvider\" ref=\"serializerProvider\" \/>\r\n\t<\/bean>\r\n\t<bean id=\"annotationMethodHandlerAdapter\" class=\"org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter\">\r\n\t\t<property name=\"messageConverters\">\r\n\t\t\t<list>\r\n\t\t\t\t<bean class=\"org.springframework.http.converter.json.MappingJacksonHttpMessageConverter\">\r\n\t\t\t\t\t<property name=\"objectMapper\" ref=\"jacksonObjectMapper\" \/>\r\n\t\t\t\t<\/bean>\r\n\t\t\t\t<bean class=\"org.springframework.http.converter.ByteArrayHttpMessageConverter\" \/>\r\n\t\t\t\t<bean class=\"org.springframework.http.converter.StringHttpMessageConverter\">\r\n\t\t\t\t\t<property name=\"writeAcceptCharset\" value=\"false\" \/>\r\n\t\t\t\t<\/bean>\r\n\t\t\t\t<bean class=\"org.springframework.http.converter.xml.SourceHttpMessageConverter\" \/>\r\n\t\t\t\t<bean class=\"org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter\" \/>\r\n\t\t\t<\/list>\r\n\t\t<\/property>\r\n\t<\/bean><\/pre>\n
\u2460\u306fnull\u306e\u5024\u3092\u4fdd\u6301\u3059\u308b\u9805\u76ee\u306f\u51fa\u529b\u3057\u306a\u3044\u3002<\/strong>
\n\u2461\u306fnull\u306e\u5024\u3092NullValueSerializer\u3067\u5b9f\u88c5\u3057\u305f\u5185\u5bb9\u306b\u3066\u7f6e\u304d\u63db\u3048\u308b\u3002<\/strong><\/p>\n
\u4eca\u56de\u3084\u308a\u305f\u3044\u4e8b\u3068\u3057\u3066\u306f\u2460\u30d1\u30bf\u30fc\u30f3\uff08\u9805\u76ee\u6bce\u51fa\u529b\u3055\u308c\u306a\u3044\uff09\u3067\u306f\u3057\u3063\u304f\u308a\u3053\u306a\u3044\u70ba\u3001
\n\u2461\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3002\uff08\u306f\u307e\u3063\u305f\uff09<\/p>\n
\u5b9f\u969b\u306b\u2461\u306e\u8a18\u8f09\u3092\u306e\u3063\u3051\u3066Tomcat\u3092\u8d77\u52d5\u3057\u3066API\u3092\u30ad\u30c3\u30af\u3059\u308b\u3068null\u21d2null
\n\uff08\u6b63\u3057\u304f\u306f(null \u21d2 “\u5e78\u305b”) \u21d2 null(\u73fe\u5b9f)\uff09<\/p>\n
\u3010\u8abf\u67fb\u3011<\/h3>\n
\u30fb\u8a2d\u5b9a\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u3068\u601d\u3044\u898b\u76f4\u3057\u3066\u307f\u308b\u3002\u21d2\u7279\u306b\u554f\u984c\u306a\u3057\u3002
\n\u30fb\u3042\u304d\u3089\u3081\u3066\u30c7\u30d0\u30c3\u30b0\u3059\u308b\u3002
\n\u21d2NullValueSerializer\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u751f\u6210\u3055\u308c\u3001\u8a2d\u5b9a\u3057\u305f\u5185\u5bb9\u3067\u53cd\u6620\u3082\u3055\u308c\u3066\u3044\u308b\u3002
\n\u305f\u3060\u3057\u3001API\u8fd4\u5374\u6642\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bObjectMapper\u304b\u3089\u306e\u6d41\u308c\u3067\u306fNullValueSerializer\u306f\u4f7f\u7528\u3055\u308c\u306a\u3044\u3002\u3002\u3002
\n\u30fb\u3044\u3063\u305f\u3093\u3042\u304d\u3089\u3081\u308b\u3002
\n\u30fb\u305d\u308c\u3082\u3042\u304d\u3089\u3081\u3066\u95a2\u4fc2\u3059\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u5074\u306e\u5b9f\u88c5\u3092\u898b\u308b\u3002
\n\u21d2AnnotationMethodHandlerAdapter\u306e\u5b9f\u88c5\u3092\u898b\u308b\u3068@Deprecated(Spring3.2\u304b\u3089\u3002\u3002\u3002)\u306b\u306a\u3063\u3066\u304a\u308a
\nRequestMappingHandlerAdapter\u3068\u66f8\u3044\u3066\u3042\u308b\u3002
\n\u30fb\u4ee5\u4e0b\u306e\u4fee\u6b63\u3002<\/p>\n
<bean id=\"annotationMethodHandlerAdapter\" class=\"org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter\">\r\n  \u2193\u2193\u2193\r\n<bean id=\"requestMappingHandlerAdapter\" class=\"org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter\">\r\n<\/pre>\n
\u30fb\u7d50\u679c\u3068\u3057\u3066\u5e78\u305b\u304c\u5e30\u308b\u3002<\/p>\n
\u3010\u307e\u3068\u3081\u3011<\/h3>\n
Spring3.1\u306fAnnotationMethodHandlerAdapter<\/strong>
\nSpring3.2\u306fRequestMappingHandlerAdapter<\/strong>
\n\u3092\u4f7f\u7528\u3059\u308b\u3002\uff08\u30d1\u30c3\u30b1\u30fc\u30b8\u3082\u5fae\u5999\u306b\u5909\u308f\u3063\u3066\u3044\u308b\u306e\u3067\u6ce8\u610f\u3002\u3002\uff09
\n\uff08\u3042\u304d\u3089\u3081\u306a\u3044\uff09<\/p>\n
\n
\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3000http:\/\/www.ois-yokohama.co.jp<\/span><\/a><\/p>\n
facebook\u3000\u3000\u3000https:\/\/www.facebook.com\/orientalinformationservice\/<\/span><\/a><\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Spring3.2&Jackson\u3092\u4f7f\u7528\u3057\u3066RestAPI\uff08Json\u30c7\u30fc\u30bf\u3092\u8fd4\u5374\uff09\u3092\u958b\u767a\u3059\u308b\u6642\u306bnull\u21d2\u7a7a\u767d\u5909\u63db\u306b\u306f\u307e\u3063\u305f\u3002\u3002\u3002 \u524d\u3082\u540c\u3058\u3088\u3046\u306a\u4e8b\u3067\u306f\u307e\u3063\u305f\u6c17\u304c\u3059\u308b\u306e\u3067\u4eca\u56de\u306f\u30e1\u30e2\u3092\u6b8b\u3059\u3002\uff08\u524d\u56de\u3001\u3001\u3001\uff09 \u8272\u3005\u5272\u611b […]<\/p>\n","protected":false},"author":1,"featured_media":3122,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"vkexunit_cta_each_option":"","footnotes":""},"categories":[6],"tags":[346,347,348,349],"class_list":["post-3097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engineer","tag-annotationmethodhandleradapter","tag-requestmappinghandleradapter","tag-spring3-2-jackson-restapi-json-null","tag-349"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/posts\/3097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/comments?post=3097"}],"version-history":[{"count":2,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/posts\/3097\/revisions"}],"predecessor-version":[{"id":7147,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/posts\/3097\/revisions\/7147"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/media\/3122"}],"wp:attachment":[{"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/media?parent=3097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/categories?post=3097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ois-yokohama.co.jp\/oisblog2018\/wp-json\/wp\/v2\/tags?post=3097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}