javaWeb-mvc之利用c3p0写入数据库出现乱码

在使用c3p0向数据库中写入中文数据时出现乱码，于是我采用了和properties中配置url一样

url=jdbc:mysql://localhost:3306/student?Unicode=true&characterEncoding=utf-8

配完之后是这样

<?xml version="1.0" encoding="UTF-8"?>

<c3p0-config>
  <named-config name="mvcapp"> 
      <property name="user">canon</property>
      <property name="password">123456</property>
      <property name="driverClass">com.mysql.jdbc.Driver</property>
      <property name="jdbcUrl">jdbc:mysql://localhost:3306/customer?unicode=true&characterEncoding=utf-8</property>
    <property name="acquireIncrement">50</property>
    <property name="initialPoolSize">100</property>
    <property name="minPoolSize">50</property>
    <property name="maxPoolSize">1000</property>

    <property name="maxStatements">20</property> 
    <property name="maxStatementsPerConnection">5</property>

  </named-config>
</c3p0-config>

但是这样不符合xml的语法，然后就改，加分号什么的，但是没用

经过查阅资料不应该用Unicode，&需要转义 utf-8和utf8是一样的，不用改也可以

再次配置

<?xml version="1.0" encoding="UTF-8"?>

<c3p0-config>
  <named-config name="mvcapp"> 
      <property name="user">canon</property>
      <property name="password">123456</property>
      <property name="driverClass">com.mysql.jdbc.Driver</property>
      <property name="jdbcUrl">jdbc:mysql://localhost:3306/customer?useUnicode=true&amp;characterEncoding=UTF8</property>
    <property name="acquireIncrement">50</property>
    <property name="initialPoolSize">100</property>
    <property name="minPoolSize">50</property>
    <property name="maxPoolSize">1000</property>

    <property name="maxStatements">20</property> 
    <property name="maxStatementsPerConnection">5</property>

  </named-config>
</c3p0-config>

结果：

ok，乱码问题解决