FasterXML/jackson

想要 在Android 裡使用編碼過的json。由於 JSONObject  的 toString() 是沒編碼過的，直接放到 URL 或 header 裡，送到 server side 不知道為什麼解不開來, 只好先在 json 裡encode 成 ascii.

官方網站：
https://github.com/FasterXML/jackson-databind

使用範例：
http://stackoverflow.com/questions/23121765/write-objectnode-to-json-string-with-utf-8-characters-to-escaped-ascii

You should enable the JsonGenerator feature which controls the escaping of the non-ASCII characters. Here is an example:

    ObjectMapper mapper = new ObjectMapper();
    mapper.getFactory().configure(JsonGenerator.Feature.ESCAPE_NON_ASCII, true);
    ObjectNode node = mapper.getNodeFactory().objectNode();
    node.put("field1", "Maël Hörz");
    System.out.println(mapper.writeValueAsString(node));

The output is:

{"field1":"Ma\u00EBl H\u00F6rz"}

---

arg build-in:{“path”:”\/中文字\/abc\/IMG_20170224_211551.jpg“,”client_modified”:1487942151,”platform”:”android”,”device_id”:”b131f953c8fa34c3″,”device_name”:”MI 3W”,”client_version”:”1.0″,”platform_version”:”6.0.1″,”language”:”en_US”}

arg jackson:{“path”:”/\u4E2D\u6587\u5B57/abc/IMG_20170224_211551.jpg“,”client_modified”:1487942151}

---

加入到 Android Stuiod：

compile 'com.fasterxml.jackson.core:jackson-core:2.7.3'
compile 'com.fasterxml.jackson.core:jackson-annotations:2.7.3'
compile 'com.fasterxml.jackson.core:jackson-databind:2.7.3'

Following android studio conventions. You can find the up to date version at: Maven Central Repository.

---

Build 起來會遇到 Error:

“Duplicate files copied in APK META-INF/*”

解法：

Add following into respective build.gradle file

packagingOptions {
        exclude 'META-INF/ASL2.0'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/MANIFEST.MF'
    }