  In this paper, we study the following chemotaxis--haptotaxis system with
(generalized) logistic source $$
  \left\{\begin{array}{ll}
  u_t=\Delta u-\chi\nabla\cdot(u\nabla v)-
  \xi\nabla\cdot(u\nabla w)+u(a-\mu u^{r-1}-w),
  \displaystyle{v_t=\Delta v- v +u},\quad \\ \displaystyle{w_t=- vw},\quad\\
\displaystyle{\frac{\partial u}{\partial \nu}=\frac{\partial v}{\partial
\nu}=\frac{\partial w}{\partial \nu}=0},\quad x\in \partial\Omega, t>0,\\
\displaystyle{u(x,0)=u_0(x)},v(x,0)=v_0(x),w(x,0)=w_0(x),\quad x\in \Omega,
  \end{array}\right.\eqno(0.1) $$ %under homogeneous Neumann boundary
conditions in a smooth bounded domain $\mathbb{R}^N(N\geq1)$, with parameter
$r>1$.
  the parameters $a\in \mathbb{R}, \mu>0, \chi>0$.
  It is shown that when $r>2$, or \begin{equation*}
  \mu>\mu^{*}=\begin{array}{ll} \frac{(N-2)_{+}}{N}(\chi+C_{\beta})
C^{\frac{1}{\frac{N}{2}+1}}_{\frac{N}{2}+1},~~~\mbox{if}~~r=2,
  \end{array} \end{equation*} % $\mu>\frac{(N-2)_{+}}{N}\chi
C^{\frac{1}{\frac{N}{2}+1}}_{\frac{N}{2}+1}$, the considered problem possesses
a global classical solution which is bounded, where
$C^{\frac{1}{\frac{N}{2}+1}}_{\frac{N}{2}+1}$ is a positive constant which is
corresponding to the maximal sobolev regularity. Here $C_{\beta}$ is a positive
constant which depends on $\xi$,
$\|u_0\|_{C(\bar{\Omega})},\|v_0\|_{W^{1,\infty}(\Omega)}$
  and $\|w_0\|_{L^\infty(\Omega)}$. This result improves or extends previous
results of several authors.
