{"id":311196,"date":"2024-05-20T22:09:21","date_gmt":"2024-05-20T14:09:21","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/311196.html"},"modified":"2024-05-20T22:09:31","modified_gmt":"2024-05-20T14:09:31","slug":"java-%e6%80%8e%e4%b9%88%e8%bf%9e%e6%8e%a5-druid-%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%9e%e6%8e%a5%e6%b1%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/311196.html","title":{"rendered":"Java \u600e\u4e48\u8fde\u63a5 druid \u6570\u636e\u5e93\u8fde\u63a5\u6c60"},"content":{"rendered":"

\"Java<\/p>\n

Java\u8fde\u63a5Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\u4e86\u51e0\u4e2a\u5173\u952e\u6b65\u9aa4\uff1a\u5f15\u5165Druid\u4f9d\u8d56\u3001\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u3001\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5<\/strong>\u3002\u5176\u4e2d\uff0c\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u6c60<\/strong>\u662f\u6838\u5fc3\u6b65\u9aa4\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5173\u7cfb\u5230\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u6548\u7387\u548c\u5b89\u5168\u6027\u3002\u5728\u5177\u4f53\u914d\u7f6e\u65f6\uff0c\u5f00\u53d1\u8005\u9700\u8981\u5728\u9879\u76ee\u7684\u8d44\u6e90\u6587\u4ef6\u4e2d\uff08\u5982application.properties\u6216druid.properties\uff09\u8be6\u7ec6\u914d\u7f6e\u6570\u636e\u5e93\u7684URL\u3001\u7528\u6237\u540d\u3001\u5bc6\u7801\u3001\u521d\u59cb\u8fde\u63a5\u6570\u3001\u6700\u5927\u8fde\u63a5\u6570\u7b49\u91cd\u8981\u53c2\u6570\u3002\u8fd9\u4e9b\u914d\u7f6e\u9879\u5c06\u76f4\u63a5\u5f71\u54cd\u5230Druid\u8fde\u63a5\u6c60\u7684\u6027\u80fd\u548c\u884c\u4e3a\uff0c\u56e0\u6b64\u5fc5\u987b\u8c28\u614e\u8bbe\u7f6e\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5f15\u5165DRUID\u4f9d\u8d56<\/h2>\n<\/p>\n

\u8981\u4f7f\u7528Druid\u8fde\u63a5\u6c60\uff0c\u9996\u5148\u9700\u8981\u5728\u9879\u76ee\u4e2d\u5f15\u5165Druid\u7684\u4f9d\u8d56\u3002\u5982\u679c\u662f\u4f7f\u7528Maven\u6784\u5efa\u7684\u9879\u76ee\uff0c\u53ef\u4ee5\u5728pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0Druid\u7684\u4f9d\u8d56\u9879\u3002<\/p>\n<\/p>\n

<dependency><\/p>\n
    <groupId>com.alibaba<\/groupId><\/p>\n
    <artifactId>druid<\/artifactId><\/p>\n
    <version>\u6700\u65b0\u7248\u672c\u53f7<\/version><\/p>\n
<\/dependency><\/p>\n
<\/code><\/pre>\n<\/p>\n
\u786e\u4fdd\u4f7f\u7528\u7684\u662fDruid\u7684\u6700\u65b0\u7248\u672c\uff0c\u4ee5\u83b7\u5f97\u6700\u4f73\u7684\u6027\u80fd\u548c\u6700\u65b0\u7684\u7279\u6027\u3002\u6b64\u5916\uff0c\u5f15\u5165\u4f9d\u8d56\u540e\uff0c\u5efa\u8bae\u5f00\u53d1\u8005\u67e5\u770b\u76f8\u5173\u7684\u5b98\u65b9\u6587\u6863\u548c\u66f4\u65b0\u65e5\u5fd7\uff0c\u4e86\u89e3\u53ef\u80fd\u5f15\u5165\u7684\u65b0\u7279\u6027\u6216\u53d8\u66f4\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u6c60<\/h2>\n<\/p>\n
Druid\u8fde\u63a5\u6c60\u7684\u914d\u7f6e\u662f\u8fde\u63a5\u6570\u636e\u5e93\u65f6\u7684\u5173\u952e\u6b65\u9aa4\u3002\u901a\u5e38\uff0c\u8fd9\u4e9b\u914d\u7f6e\u662f\u901a\u8fc7\u4e00\u4e2a\u8d44\u6e90\u6587\u4ef6\u8fdb\u884c\u7684\uff0c\u5982application.properties\u6216druid.properties\u3002\u5f00\u53d1\u8005\u9700\u8981\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u6307\u5b9a\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4fe1\u606f\u3001\u8fde\u63a5\u6c60\u7684\u5927\u5c0f\u3001\u7b49\u5f85\u8d85\u65f6\u65f6\u95f4\u7b49\u591a\u4e2a\u91cd\u8981\u53c2\u6570\u3002<\/p>\n<\/p>\n
# \u57fa\u672c\u5c5e\u6027 url\u3001user\u3001password<\/p>\n
spring.datasource.url=jdbc:mysql:\/\/localhost:3306\/test?useUnicode=true&characterEncoding=utf8<\/p>\n
spring.datasource.username=root<\/p>\n
spring.datasource.password=123456<\/p>\n
\u521d\u59cb\u5316\u8fde\u63a5\u5927\u5c0f<\/strong><\/h2>\n
spring.datasource.initialSize=5<\/p>\n
\u6700\u5927\u8fde\u63a5\u6c60\u6570\u91cf<\/strong><\/h2>\n
spring.datasource.maxActive=20<\/p>\n
\u914d\u7f6e\u83b7\u53d6\u8fde\u63a5\u7b49\u5f85\u8d85\u65f6\u7684\u65f6\u95f4<\/strong><\/h2>\n
spring.datasource.maxWAI<\/a>t=60000<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4ed4\u7ec6\u914d\u7f6e\u8fd9\u4e9b\u53c2\u6570\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u5bf9\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5408\u7406\u7684maxActive<\/code>\u503c\u53ef\u4ee5\u4fdd\u8bc1\u9ad8\u5e76\u53d1\u65f6\u6570\u636e\u5e93\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5<\/h2>\n<\/p>\n
\u914d\u7f6e\u5b8c\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u540e\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u7f16\u5199Java\u4ee3\u7801\u6765\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u3002\u4e00\u822c\u800c\u8a00\uff0c\u901a\u8fc7Druid\u63d0\u4f9b\u7684DataSource\u7c7b\u5373\u53ef\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
import javax.sql.DataSource;<\/p>\n
import com.alibaba.druid.pool.DruidDataSource;<\/p>\n
public class DBConnection {<\/p>\n
    public static void main(String[] args) throws Exception {<\/p>\n
        \/\/ \u521b\u5efaDruid\u8fde\u63a5\u6c60\u5bf9\u8c61<\/p>\n
        DruidDataSource dataSource = new DruidDataSource();<\/p>\n
        \/\/ \u8bbe\u7f6e\u8fde\u63a5\u4fe1\u606f<\/p>\n
        dataSource.setUrl("jdbc:mysql:\/\/localhost:3306\/test");<\/p>\n
        dataSource.setUsername("root");<\/p>\n
        dataSource.setPassword("123456");<\/p>\n
        \/\/ \u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n
        Connection conn = dataSource.getConnection();<\/p>\n
        System.out.println("\u6210\u529f\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\uff1a" + conn);<\/p>\n
        \/\/ \u91ca\u653e\u8d44\u6e90<\/p>\n
        conn.close();<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u5b9e\u9645\u7684\u9879\u76ee\u4e2d\uff0c\u4e3a\u4e86\u8fdb\u4e00\u6b65\u63d0\u5347\u6548\u7387\u548c\u7075\u6d3b\u6027\uff0c\u901a\u5e38\u4f1a\u5c06\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u7684\u903b\u8f91\u5c01\u88c5\u5728\u4e13\u95e8\u7684\u5de5\u5177\u7c7b\u6216\u901a\u8fc7Spring\u6846\u67b6\u6765\u7ba1\u7406\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f18\u5316\u8fde\u63a5\u6c60\u914d\u7f6e<\/h2>\n<\/p>\n
\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u80fd\u591f\u4ee5\u6700\u4f18\u7684\u72b6\u6001\u8fd0\u884c\uff0c\u9664\u4e86\u57fa\u672c\u7684\u914d\u7f6e\u9879\u4e4b\u5916\uff0c\u8fd8\u9700\u8fdb\u4e00\u6b65\u4f18\u5316\u914d\u7f6e\u3002\u6bd4\u5982\u5b9a\u65f6\u68c0\u6d4b\u6c60\u4e2d\u7684\u7a7a\u95f2\u8fde\u63a5\u3001\u81ea\u52a8\u79fb\u9664\u65e0\u6548\u7684\u8fde\u63a5\u7b49\u3002<\/p>\n<\/p>\n
# \u914d\u7f6e\u4e00\u4e2a\u8fde\u63a5\u5728\u6c60\u4e2d\u6700\u5c0f\u751f\u5b58\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u662f\u6beb\u79d2<\/p>\n
spring.datasource.minEvictableIdleTimeMillis=300000<\/p>\n
\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u7684sql<\/strong><\/h2>\n
spring.datasource.validationQuery=SELECT 1<\/p>\n
\u7533\u8bf7\u8fde\u63a5\u7684\u65f6\u5019\u68c0\u6d4b\uff0c\u5982\u679c\u7a7a\u95f2\u65f6\u95f4\u5927\u4e8etimeBetweenEvictionRunsMillis\uff0c\u6267\u884cvalidationQuery\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u3002<\/strong><\/h2>\n
spring.datasource.testWhileIdle=true<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e9b\u9ad8\u7ea7\u914d\u7f6e\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u8fde\u63a5\u6c60\u7684\u53ef\u9760\u6027\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
Java\u8fde\u63a5Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u662f\u4e00\u4e2a\u6d89\u53ca\u914d\u7f6e\u548c\u4ee3\u7801\u5b9e\u73b0\u76f8\u7ed3\u5408\u7684\u8fc7\u7a0b\u3002\u901a\u8fc7\u4ed4\u7ec6\u5730\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u53c2\u6570\u3001\u5408\u7406\u5730\u7ba1\u7406\u6570\u636e\u5e93\u8fde\u63a5\u8d44\u6e90\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u5347\u5e94\u7528\u7a0b\u5e8f\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u6548\u7387\u548c\u7a33\u5b9a\u6027\u3002\u540c\u65f6\uff0c\u968f\u7740\u9879\u76ee\u9700\u6c42\u7684\u4e0d\u65ad\u53d8\u5316\uff0c\u5f00\u53d1\u8005\u8fd8\u9700\u4e0d\u65ad\u5730\u8c03\u6574\u548c\u4f18\u5316\u8fde\u63a5\u6c60\u914d\u7f6e\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u6027\u80fd\u9700\u6c42\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u8fde\u63a5\u6570\u636e\u5e93\uff1f<\/strong><\/p>\n
Druid\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u9ad8\u6027\u80fd\u6570\u636e\u5e93\u8fde\u63a5\u6c60\uff0c\u53ef\u4ee5\u4e3aJava\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u6570\u636e\u5e93\u8fde\u63a5\u7ba1\u7406\u548c\u76d1\u63a7\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u8fde\u63a5Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u7684\u6b65\u9aa4\uff1a<\/p>\n
    \n
  • \n
    \u5bfc\u5165Druid\u4f9d\u8d56\uff1a\u5728\u4f60\u7684Java\u9879\u76ee\u4e2d\uff0c\u9996\u5148\u9700\u8981\u5bfc\u5165Druid\u7684\u4f9d\u8d56\u3002\u4f60\u53ef\u4ee5\u5728Maven\u6216Gradle\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0Druid\u7684\u76f8\u5173\u4f9d\u8d56\u9879\uff0c\u7136\u540e\u8fdb\u884c\u6784\u5efa\u548c\u66f4\u65b0\u3002<\/p>\n<\/li>\n
  • \n
    \u914d\u7f6eDruid\u8fde\u63a5\u5c5e\u6027\uff1a\u5728\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u4f60\u9700\u8981\u8bbe\u7f6eDruid\u8fde\u63a5\u6c60\u7684\u5c5e\u6027\uff0c\u5305\u62ec\u6570\u636e\u5e93URL\u3001\u7528\u6237\u540d\u3001\u5bc6\u7801\u7b49\u3002\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u4e00\u4e9b\u5176\u4ed6\u7684\u5c5e\u6027\u6765\u4f18\u5316\u8fde\u63a5\u6c60\u7684\u6027\u80fd\uff0c\u5982\u6700\u5927\u8fde\u63a5\u6570\u3001\u6700\u5c0f\u8fde\u63a5\u6570\u3001\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4\u7b49\u3002<\/p>\n<\/li>\n
  • \n
    \u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\uff1a\u5728\u4f60\u7684Java\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7DruidDataSource\u7c7b\u7684\u5b9e\u4f8b\u6765\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u3002\u8c03\u7528getConnection()\u65b9\u6cd5\u5373\u53ef\u83b7\u53d6\u4e00\u4e2a\u53ef\u7528\u7684\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/p>\n<\/li>\n
  • \n
    \u4f7f\u7528\u8fde\u63a5\u5b8c\u6210\u64cd\u4f5c\uff1a\u83b7\u53d6\u5230\u6570\u636e\u5e93\u8fde\u63a5\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u7684JDBC\u4ee3\u7801\u6765\u6267\u884cSQL\u67e5\u8be2\u6216\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ul>\n
    2. Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u5982\u4f55\u63d0\u9ad8Java\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\uff1f<\/strong><\/p>\n
    Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u63d0\u4f9b\u4e86\u4e00\u4e9b\u529f\u80fd\u6765\u63d0\u9ad8Java\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\uff1a<\/p>\n
      \n
    • \n
      \u8fde\u63a5\u590d\u7528\uff1aDruid\u8fde\u63a5\u6c60\u4f1a\u5728\u5e94\u7528\u7a0b\u5e8f\u521d\u59cb\u5316\u65f6\u521b\u5efa\u4e00\u5b9a\u6570\u91cf\u7684\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5e76\u5c06\u8fd9\u4e9b\u8fde\u63a5\u5b58\u50a8\u5728\u8fde\u63a5\u6c60\u4e2d\u3002\u5f53\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u8fde\u63a5\u6570\u636e\u5e93\u65f6\uff0c\u5b83\u53ef\u4ee5\u4ece\u8fde\u63a5\u6c60\u4e2d\u83b7\u53d6\u4e00\u4e2a\u53ef\u7528\u7684\u8fde\u63a5\uff0c\u5e76\u5728\u4f7f\u7528\u5b8c\u6bd5\u540e\u5c06\u8fde\u63a5\u5f52\u8fd8\u7ed9\u8fde\u63a5\u6c60\u3002\u8fd9\u6837\u80fd\u591f\u51cf\u5c11\u6bcf\u6b21\u64cd\u4f5c\u90fd\u91cd\u65b0\u521b\u5efa\u548c\u9500\u6bc1\u8fde\u63a5\u7684\u5f00\u9500\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<\/li>\n
    • \n
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    • \n
      \u8fde\u63a5\u6c60\u53c2\u6570\u4f18\u5316\uff1aDruid\u8fde\u63a5\u6c60\u63d0\u4f9b\u4e86\u4e00\u4e9b\u914d\u7f6e\u53c2\u6570\uff0c\u53ef\u4ee5\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u8fdb\u884c\u8c03\u6574\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u6700\u5927\u8fde\u63a5\u6570\u548c\u6700\u5c0f\u8fde\u63a5\u6570\uff0c\u4ee5\u53ca\u8d85\u65f6\u65f6\u95f4\u7b49\u3002\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u8d1f\u8f7d\u548c\u6570\u636e\u5e93\u7684\u6027\u80fd\uff0c\u901a\u8fc7\u5408\u7406\u5730\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u5e73\u8861\u8fde\u63a5\u8d44\u6e90\u7684\u4f7f\u7528\u548c\u6027\u80fd\u7684\u8868\u73b0\u3002<\/p>\n<\/li>\n<\/ul>\n
      3. \u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u800c\u4e0d\u662f\u4f20\u7edf\u7684JDBC\u8fde\u63a5\u65b9\u5f0f\uff1f<\/strong><\/p>\n
      Druid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u76f8\u5bf9\u4e8e\u4f20\u7edf\u7684JDBC\u8fde\u63a5\u65b9\u5f0f\u6709\u4ee5\u4e0b\u51e0\u4e2a\u4f18\u52bf\uff1a<\/p>\n
        \n
      • \n
        \u9ad8\u6027\u80fd\uff1aDruid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u91c7\u7528\u4e86\u4e00\u4e9b\u4f18\u5316\u624b\u6bb5\uff0c\u5982\u9884\u5904\u7406\u3001\u6c60\u5316\u7b49\u6280\u672f\uff0c\u4ece\u800c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u8fde\u63a5\u901f\u5ea6\u548c\u66f4\u4f4e\u7684\u8d44\u6e90\u6d88\u8017\u3002\u4e0e\u4f20\u7edf\u7684JDBC\u8fde\u63a5\u65b9\u5f0f\u76f8\u6bd4\uff0c\u5b83\u80fd\u591f\u66f4\u597d\u5730\u5904\u7406\u9ad8\u5e76\u53d1\u548c\u5927\u6570\u636e\u91cf\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u3002<\/p>\n<\/li>\n
      • \n
        \u53ef\u7ba1\u7406\u6027\uff1aDruid\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u63d0\u4f9b\u4e86\u76d1\u63a7\u548c\u7ba1\u7406\u8fde\u63a5\u7684\u529f\u80fd\u3002\u5b83\u53ef\u4ee5\u8ffd\u8e2a\u8fde\u63a5\u7684\u6253\u5f00\u3001\u5173\u95ed\u4ee5\u53ca\u4f7f\u7528\u60c5\u51b5\uff0c\u5e76\u63d0\u4f9b\u53ef\u89c6\u5316\u7684\u76d1\u63a7\u754c\u9762\u3002\u8fd9\u4f7f\u5f97\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u66f4\u597d\u5730\u4e86\u89e3\u548c\u4f18\u5316\u5b83\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n<\/li>\n
      • \n
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      • \n
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