{"id":31346,"date":"2023-09-07T16:35:09","date_gmt":"2023-09-01T01:53:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8java%e5%88%9b%e5%bb%bajson\/"},"modified":"2025-08-12T23:33:49","modified_gmt":"2025-08-12T15:33:49","slug":"%e7%94%a8java%e5%88%9b%e5%bb%bajson","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8java%e5%88%9b%e5%bb%bajson\/","title":{"rendered":"\u7528Java\u521b\u5efaJSON"},"content":{"rendered":"

\u4f7f\u7528Jackson\u5e93\u6765\u751f\u6210JSON\u6587\u4ef6\u3002<\/p>\n

\u7a0b\u5f0f<\/p>\n
\/\/ -----------------------------------------------------------------------<\/span>\r\n\/*\r\n        json_create.java\r\n\r\n                                        Jan\/10\/2020\r\n*\/<\/span>\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\nimport<\/span>  java.util.HashMap<\/span>;<\/span>\r\nimport<\/span>  java.io.File<\/span>;<\/span>\r\nimport<\/span>  java.io.FileWriter<\/span>;<\/span>\r\nimport<\/span>  java.io.BufferedWriter<\/span>;<\/span>\r\nimport<\/span>  java.io.PrintWriter<\/span>;<\/span>\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\npublic<\/span> class<\/span> json_create<\/span>\r\n{<\/span>\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\npublic<\/span>  static<\/span> void<\/span> main<\/span> (<\/span>String<\/span> []<\/span> args<\/span>)<\/span>\r\n{<\/span>\r\n        System<\/span>.<\/span>err<\/span>.<\/span>println<\/span> (<\/span>\"*** \u958b\u59cb ***\"<\/span>);<\/span>\r\n\r\n        String<\/span> json_file<\/span> =<\/span> args<\/span>[<\/span>0<\/span>];<\/span>\r\n\r\n        HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span>String<\/span>>><\/span>\r\n                dict_aa<\/span> =<\/span> data_prepare_proc<\/span> ();<\/span>\r\n\r\n        String<\/span> json_str<\/span> =<\/span> json_manipulate<\/span>.<\/span>dict_to_json_proc<\/span> (<\/span>dict_aa<\/span>);<\/span>\r\n\r\n        file_write_proc<\/span> (<\/span>json_file<\/span>,<\/span>json_str<\/span>);<\/span>\r\n\r\n        System<\/span>.<\/span>err<\/span>.<\/span>println<\/span> (<\/span>\"*** \u7d42\u4e86 ***\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\nstatic<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span>String<\/span>>><\/span> data_prepare_proc<\/span> ()<\/span>\r\n{<\/span>\r\n        HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span>String<\/span>>><\/span> dict_aa<\/span>\r\n                =<\/span> new<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span>String<\/span>>><\/span> ();<\/span>\r\n\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0921\"<\/span>,<\/span>\"\u5b87\u90fd\u5bae\"<\/span>,<\/span>19825<\/span>,<\/span>\"2008-2-12\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0922\"<\/span>,<\/span>\"\u5c0f\u5c71\"<\/span>,<\/span>35749<\/span>,<\/span>\"2008-10-14\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0923\"<\/span>,<\/span>\"\u4f50\u91ce\"<\/span>,<\/span>49128<\/span>,<\/span>\"2008-4-9\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0924\"<\/span>,<\/span>\"\u8db3\u5229\"<\/span>,<\/span>85972<\/span>,<\/span>\"2008-3-21\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0925\"<\/span>,<\/span>\"\u65e5\u5149\"<\/span>,<\/span>64152<\/span>,<\/span>\"2008-7-25\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0926\"<\/span>,<\/span>\"\u4e0b\u91ce\"<\/span>,<\/span>85793<\/span>,<\/span>\"2008-10-9\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0927\"<\/span>,<\/span>\"\u3055\u304f\u3089\"<\/span>,<\/span>73164<\/span>,<\/span>\"2008-2-11\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0928\"<\/span>,<\/span>\"\u77e2\u677f\"<\/span>,<\/span>65237<\/span>,<\/span>\"2008-5-27\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0929\"<\/span>,<\/span>\"\u771f\u5ca1\"<\/span>,<\/span>28754<\/span>,<\/span>\"2008-1-5\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0930\"<\/span>,<\/span>\"\u6803\u6728\"<\/span>,<\/span>79571<\/span>,<\/span>\"2008-7-4\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0931\"<\/span>,<\/span>\"\u5927\u7530\u539f\"<\/span>,<\/span>36952<\/span>,<\/span>\"2008-9-27\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0932\"<\/span>,<\/span>\"\u9e7f\u6cbc\"<\/span>,<\/span>42316<\/span>,<\/span>\"2008-10-24\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0933\"<\/span>,<\/span>\"\u90a3\u9808\u5869\u539f\"<\/span>,<\/span>64753<\/span>,<\/span>\"2008-12-17\"<\/span>);<\/span>\r\n        dict_aa<\/span> =<\/span> dict_append_proc<\/span>\r\n                (<\/span>dict_aa<\/span>,<\/span>\"t0934\"<\/span>,<\/span>\"\u90a3\u9808\u70cf\u5c71\"<\/span>,<\/span>71298<\/span>,<\/span>\"2008-11-15\"<\/span>);<\/span>\r\n\r\n\r\n        return<\/span>  dict_aa<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\nstatic<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span>String<\/span>>><\/span>\r\ndict_append_proc<\/span> (<\/span>HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span>String<\/span>>><\/span> dict_aa<\/span>,<\/span>\r\n        String<\/span> key_aa<\/span>,<\/span>String<\/span> name<\/span>,<\/span>int<\/span> population<\/span>,<\/span>String<\/span> date_mod<\/span>)<\/span>\r\n{<\/span>\r\n        String<\/span> str_population<\/span> =<\/span> Integer<\/span>.<\/span>toString<\/span> (<\/span>population<\/span>);<\/span>\r\n\r\n        HashMap<\/span> <<\/span>String<\/span>,<\/span>String<\/span>><\/span> dict_unit<\/span>\r\n                                =<\/span> new<\/span> HashMap<\/span> <<\/span>String<\/span>,<\/span>String<\/span>><\/span> ();<\/span>\r\n\r\n        dict_unit<\/span>.<\/span>put<\/span> (<\/span>\"name\"<\/span>,<\/span>name<\/span>);<\/span>\r\n        dict_unit<\/span>.<\/span>put<\/span> (<\/span>\"population\"<\/span>,<\/span>str_population<\/span>);<\/span>\r\n        dict_unit<\/span>.<\/span>put<\/span> (<\/span>\"date_mod\"<\/span>,<\/span>date_mod<\/span>);<\/span>\r\n\r\n        dict_aa<\/span>.<\/span>put<\/span> (<\/span>key_aa<\/span>,<\/span>dict_unit<\/span>);<\/span>\r\n\r\n        return<\/span>  dict_aa<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ ----------------------------------------------------------------<\/span>\r\nstatic<\/span> void<\/span> file_write_proc<\/span> (<\/span>String<\/span> file_out<\/span>,<\/span>String<\/span> str_out<\/span>)<\/span>\r\n{<\/span>\r\n        try<\/span>\r\n        {<\/span>\r\n        File<\/span> file<\/span> =<\/span> new<\/span> File<\/span> (<\/span>file_out<\/span>);<\/span>\r\n        FileWriter<\/span> filewriter<\/span> =<\/span> new<\/span> FileWriter<\/span> (<\/span>file<\/span>);<\/span>\r\n        BufferedWriter<\/span> bw<\/span> =<\/span> new<\/span> BufferedWriter<\/span> (<\/span>filewriter<\/span>);<\/span>\r\n\r\n        PrintWriter<\/span> pw<\/span> =<\/span> new<\/span> PrintWriter<\/span> (<\/span>bw<\/span>);<\/span>\r\n        pw<\/span>.<\/span>println<\/span> (<\/span>str_out<\/span>);<\/span>\r\n        pw<\/span>.<\/span>close<\/span> ();<\/span>\r\n\r\n        }<\/span>\r\n        catch<\/span> (<\/span>Exception<\/span> ee<\/span>)<\/span>\r\n                {<\/span>\r\n                ee<\/span>.<\/span>printStackTrace<\/span> ();<\/span>\r\n                }<\/span>\r\n\r\n}<\/span>\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\n}<\/span>\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\n<\/code><\/pre>\n
\/\/ -----------------------------------------------------------------------<\/span>\r\n\/*\r\n        json_manipulate.java\r\n\r\n\r\n                                Jan\/10\/2020\r\n*\/<\/span>\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\nimport<\/span>  java.util.HashMap<\/span>;<\/span>\r\n\r\nimport<\/span> com.fasterxml.jackson.core.type.TypeReference<\/span>;<\/span>\r\nimport<\/span> com.fasterxml.jackson.databind.ObjectMapper<\/span>;<\/span>\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\npublic<\/span> class<\/span> json_manipulate<\/span>\r\n{<\/span>\r\n\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\nstatic<\/span> String<\/span>   dict_to_json_proc<\/span>\r\n        (<\/span>HashMap<\/span> <<\/span>String<\/span>,<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span>String<\/span>>><\/span> dict_aa<\/span>)<\/span>\r\n{<\/span>\r\n        String<\/span> str_json<\/span> =<\/span> \"\"<\/span>;<\/span>\r\n\r\n        ObjectMapper<\/span> mapper<\/span> =<\/span> new<\/span> ObjectMapper<\/span>();<\/span>\r\n        try<\/span>\r\n                {<\/span>\r\n                str_json<\/span> =<\/span> mapper<\/span>.<\/span>writeValueAsString<\/span>(<\/span>dict_aa<\/span>);<\/span>\r\n                }<\/span>\r\n        catch<\/span>   (<\/span>Exception<\/span> ee<\/span>)<\/span>\r\n                {<\/span>\r\n                ee<\/span>.<\/span>printStackTrace<\/span> ();<\/span>\r\n                }<\/span>\r\n\r\n        return<\/span>  str_json<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\n}<\/span>\r\n\/\/ -----------------------------------------------------------------------<\/span>\r\n<\/code><\/pre>\n
export JAR=..\/jar\r\nexport CLASSPATH=.:$(JAR)\/jackson-annotations-2.14.2.jar:$(JAR)\/jackson-core-2.14.2.jar:$(JAR)\/jackson-databind-2.14.2.jar\r\njson_create.class: json_create.java\r\n\tjavac json_create.java\r\n\r\nclean:\r\n        rm -f *.class\r\n<\/code><\/pre>\n
\u6267\u884c<\/p>\n
export <\/span>JAR<\/span>=<\/span>..\/jar\r\nexport <\/span>CLASSPATH<\/span>=<\/span>.:$JAR<\/span>\/jackson-annotations-2.14.2.jar:$JAR<\/span>\/jackson-core-2.14.2.jar:$JAR<\/span>\/jackson-databind-2.14.2.jar\r\n#<\/span>\r\njava json_create out01.json\r\n<\/code><\/pre>\n
\u786e\u8ba4\u7684\u7248\u672c<\/p>\n
$ javac --version\r\njavac 18.0.2-ea\r\n\r\n$ java --version\r\nopenjdk 18.0.2-ea 2022-07-19\r\nOpenJDK Runtime Environment (build 18.0.2-ea+9-Ubuntu-2)\r\nOpenJDK 64-Bit Server VM (build 18.0.2-ea+9-Ubuntu-2, mixed mode, sharing)\r\n<\/code><\/pre>\n
\u76f8\u5173\u4fe1\u606f\u4f7f\u7528Java\u8bfb\u53d6JSON<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528Jackson\u5e93\u6765\u751f\u6210JSON\u6587\u4ef6\u3002 \u7a0b\u5f0f \/\/ —————————- […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31346","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u7528Java\u521b\u5efaJSON - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u7528Java\u521b\u5efaJSON\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528java\u521b\u5efajson\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u7528Java\u521b\u5efaJSON\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u7528Java\u521b\u5efaJSON\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528java\u521b\u5efajson\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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