所以我将这个字符串保存在数据库中：
{\"facebook\":\"fb.com\",\"twitter\":\"twitter.com\",\"instagram\":\"\",\"googlePlus\":\"\",\"others\":\"espn.com\"}
但是当我调用GET api时，我在JSON中得到了这个
{\\\"facebook\\\":\\\"fb.com\\\",\\\"twitter\\\":\\\"twitter.com\\\",\\\"instagram\\\":\\\"\\\",\\\"googlePlus\\\":\\\"\\\",\\\"others\\\":\\\"espn.com\\\"}
为什么会发生这种情况？如何获得存储在数据库中的完全相同的数据？
答案 0 :(得分：6)
当您检索数据时，它会再次转义，因为Spring认为\字符是数据的一部分而不是用于转义"。
您永远不想存储转义字符（无论是JSON特殊字符，文本中的HTML字符，......），您必须存储未转义的数据以解决您的问题。在显示数据时必须进行转义，而不是在存储数据时进行转义。
由于您遇到的问题，存储转义数据是一种不好的做法，但也因为它会占用数据库中无用的存储空间（这对您来说可能不是一个问题，但会与数百万行。
答案 1 :(得分：1)
您还可以在<?xml version="1.0" encoding="UTF-8"?>
<!-- config.xml reference: https://build.phonegap.com/docs/config-xml -->
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id = "MyAppId"
version = "3.0.1">
<name>MyApName</name>
<description>MyAppDescription</description>
<author href="http://MyAppURL" email="MyAppMail@MyAppDomain.example">MyAppAuthor</author>
<preference name="permissions" value="none"/>
<preference name="orientation" value="default" />
<preference name="target-device" value="universal" />
<preference name="fullscreen" value="true" />
<preference name="webviewbounce" value="true" />
<preference name="prerendered-icon" value="true" />
<preference name="stay-in-webview" value="false" />
<preference name="ios-statusbarstyle" value="white-opaque" />
<preference name="detect-data-types" value="true" />
<preference name="exit-on-suspend" value="false" />
<preference name="show-splash-screen-spinner" value="false" />
<preference name="auto-hide-splash-screen" value="true" />
<preference name="disable-cursor" value="false" />
<preference name="android-installLocation" value="auto" />
<plugin name="cordova-plugin-device" />
<plugin name="cordova-plugin-inappbrowser" />
<plugin name="cordova-plugin-network-information" />
<plugin name="cordova-plugin-splashscreen" />
<icon platform="ios" src="res/icons/ios/icon-small.png" width="29" height="29" />
<icon platform="ios" src="res/icons/ios/icon-small-2x.png" width="58" height="58" />
<icon platform="ios" src="res/icons/ios/icon-40.png" width="40" height="40" />
<icon platform="ios" src="res/icons/ios/icon-40-2x.png" width="80" height="80" />
<icon platform="ios" src="res/icons/ios/icon-50.png" width="50" height="50" />
<icon platform="ios" src="res/icons/ios/icon-50-2x.png" width="100" height="100" />
<icon platform="ios" src="res/icons/ios/icon.png" width="57" height="57" />
<icon platform="ios" src="res/icons/ios/icon-2x.png" width="114" height="114" />
<icon platform="ios" src="res/icons/ios/icon-60.png" width="60" height="60" />
<icon platform="ios" src="res/icons/ios/icon-60-2x.png" width="120" height="120" />
<icon platform="ios" src="res/icons/ios/icon-60-3x.png" width="180" height="180" />
<icon platform="ios" src="res/icons/ios/icon-72.png" width="72" height="72" />
<icon platform="ios" src="res/icons/ios/icon-72-2x.png" width="144" height="144" />
<icon platform="ios" src="res/icons/ios/icon-76.png" width="76" height="76" />
<icon platform="ios" src="res/icons/ios/icon-76-2x.png" width="152" height="152" />
<splash platform="ios" src="res/screens/ios/screen-iphone-portrait.png" width="320" height="480" />
<splash platform="ios" src="res/screens/ios/screen-iphone-portrait-2x.png" width="640" height="960" />
<splash platform="ios" src="res/screens/ios/screen-iphone-portrait-568h-2x.png" width="640" height="1136" />
<splash platform="ios" src="res/screens/ios/screen-iphone-portrait-667h.png" width="750" height="1334" />
<splash platform="ios" src="res/screens/ios/screen-iphone-portrait-736h.png" width="1242" height="2208" />
<splash platform="ios" src="res/screens/ios/screen-ipad-portrait.png" width="768" height="1024" />
<splash platform="ios" src="res/screens/ios/screen-ipad-portrait-2x.png" width="1536" height="2048" />
<icon platform="android" qualifier="ldpi" src="res/icons/android/icon-36-ldpi.png"/>
<icon platform="android" qualifier="mdpi" src="res/icons/android/icon-48-mdpi.png"/>
<icon platform="android" qualifier="hdpi" src="res/icons/android/icon-72-hdpi.png"/>
<icon platform="android" qualifier="xhdpi" src="res/icons/android/icon-96-xhdpi.png"/>
<icon platform="android" qualifier="xxhdpi" src="res/icons/android/icon-144-xxhdpi.png"/>
<icon platform="android" qualifier="xxxhdpi" src="res/icons/android/icon-192-xxxhdpi.png"/>
<splash platform="android" qualifier="ldpi" src="res/screens/android/screen-ldpi-portrait.png" />
<splash platform="android" qualifier="mdpi" src="res/screens/android/screen-mdpi-portrait.png" />
<splash platform="android" qualifier="hdpi" src="res/screens/android/screen-hdpi-portrait.png" />
<splash platform="android" qualifier="xhdpi" src="res/screens/android/screen-xhdpi-portrait.png" />
<icon platform="wp8" src="res/icons/wp8/ApplicationIcon.png" width="99" height="99" />
<icon platform="wp8" src="res/icons/wp8/Background.png" width="159" height="159" />
<icon platform="windows" src="res/icons/windows8/logo.png" width="150" height="150" />
<icon platform="windows" src="res/icons/windows8/smalllogo.png" width="30" height="30" />
<icon platform="windows" src="res/icons/windows8/storelogo.png" width="50" height="50" />
<gap:config-file platform="ios" parent="CFBundleShortVersionString">
<string>3.0.1</string>
</gap:config-file>
<access origin="*"/>
<plugin name="cordova-plugin-whitelist" version="1" />
<allow-intent href="http://*/*" />
<allow-intent href="https://*/*" />
<allow-intent href="tel:*" />
<allow-intent href="sms:*" />
<allow-intent href="mailto:*" />
<allow-intent href="geo:*" />
<platform name="android">
<allow-intent href="market:*" />
</platform>
<platform name="ios">
<allow-intent href="itms:*" />
<allow-intent href="itms-apps:*" />
</platform>
机制中使用apache构建Json数据。请参阅参考https://commons.apache.org/proper/commons-lang/javadocs/api-3.4/org/apache/commons/lang3/StringEscapeUtils.html
答案 2 :(得分：0)
获取数据后，将其保存在String中，然后：
String newJava = str.replace("\\\", "\");